Starling Artifacts
Collection
These are the artifacts associated with the initial release of the Starling Agent. • 7 items • Updated
PMID int64 37 41.1M | pmid large_stringlengths 2 8 | support_text large_stringlengths 23 2.28k | reaction_type large_stringlengths 2 119 ⌀ | reactants large_stringlengths 1 453 ⌀ | product large_stringlengths 1 724 | reagent large_stringlengths 1 267 ⌀ | catalyst large_stringlengths 1 325 ⌀ | solvent large_stringlengths 1 263 ⌀ | yield_percent float64 0 11.7k ⌀ | yield_type large_stringclasses 8
values | outcome_status large_stringclasses 5
values | temperature large_stringlengths 1 85 ⌀ | reaction_time large_stringlengths 1 180 ⌀ | setup_and_notes large_stringlengths 1 443 ⌀ | extra_details large_stringlengths 3 349 ⌀ | product_smiles large_stringlengths 1 1.53k |
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38,279,298 | 38279298 | Zu and Kinjo investigated the regioselective cycloaddition involving 1,2-diboraallene 25 and azide, without catalysis and using mild conditions, leading to diboratriazole 26. | cycloaddition | 1,2-diboraallene 25, azide | diboratriazole 26 | null | null | null | null | null | success | null | null | without catalysis, mild conditions | null | B1=NN=NB1 |
21,506,178 | 21506178 | The coupling of 2-chloropyridine with the N⁹-p-methoxybenzyl (PMB)-protected adenine 55 gave rise to 8-pyridyladenine 56 in 55% yield using a Pd(OH)₂/CuI system in combination with Cs₂CO₃ as the base. | heteroarylation | 2-chloropyridine, N⁹-p-methoxybenzyl (PMB)-protected adenine 55 | 8-pyridyladenine 56 | Cs₂CO₃ | Pd(OH)₂/CuI | null | 55 | unspecified | success | null | null | null | null | Nc1ncnc2nc(-c3ccccn3)[nH]c12 |
17,525,926 | 17525926 | 6-(2-Dimethylaminonaphthoyl)alanine (DANA) was prepared by Imperiali and co-workers through the asymmetric alkylation of 2 with α-bromo ketone 81 and 17e as a phase-transfer catalyst. | alkylation | 2, α-bromo ketone 81 | 6-(2-Dimethylaminonaphthoyl)alanine | null | 17e | null | null | null | success | null | null | Asymmetric alkylation utilizing a phase-transfer catalyst. | null | CCN(CC)N=O |
11,848,980 | 11848980 | Whitehurst and collaborators showed that the condensation of 2-methylcyclopentane-1,3-dione (49) with methyl vinyl ketone gave 4-hydroxy-1,4-dimethylbicyclo[3.2.1]octane-7,8-dione (50) as a byproduct. | condensation | 2-methylcyclopentane-1,3-dione, methyl vinyl ketone | 4-hydroxy-1,4-dimethylbicyclo[3.2.1]octane-7,8-dione | null | null | null | null | null | success | null | null | obtained as byproduct | null | CC12CCC(C)(O)C(CC1=O)C2=O |
15,186,185 | 15186185 | Treatment of allyl phenyl ether... produced o-allylphenol almost quantitatively... Similar results were attained in the presence of ethylaluminum dichloride. | aromatic Claisen rearrangement | allyl phenyl ether | o-allylphenol | ethylaluminum dichloride | null | hexane | null | quantitative | success | room temperature | null | null | null | C=CCC1(O)C=CC=CC1 |
12,744,695 | 12744695 | After activation of the resulting allylic alcohol as the carbonate 235, the nitroacetic acid ethyl ester was introduced under palladium catalysis. 236, the precursor of (±)- carbovir, was isolated in quantitative yield. | cross-coupling | carbonate 235, nitroacetic acid ethyl ester | 236 | null | palladium | null | null | quantitative | success | null | null | null | null | O=C([O-])C[N+](=O)[O-] |
30,875,202 | 30875202 | The ZnI₂-catalyzed reaction of chiral nitorone 2 with silyl ketene acetal gives methyl (2S,3R)-[1,3-bis(tert-butyldimethylsilyloxy)pyrrolidin-2-yl]acetate in a 90:10 trans/cis ratio. | Mannich-type addition | nitorone 2, silyl ketene acetal | methyl (2S,3R)-[1,3-bis(tert-butyldimethylsilyloxy)pyrrolidin-2-yl]acetate | null | ZnI₂ | null | null | null | success | null | null | Product obtained in a 90:10 trans/cis ratio. | null | COC(=O)C[C@H]1[C@H](O[Si](C)(C)C(C)(C)C)CCN1O[Si](C)(C)C(C)(C)C |
19,831,366 | 19831366 | Application of a modified Polonovski reaction for serratinine 244 resulted in generation of serratezomine A 245. | Polonovski reaction | serratinine | serratezomine A | null | null | null | null | null | success | null | null | Modified Polonovski reaction. | null | C[C@H]1C[C@@H]2OC(=O)C[C@H]([C@H]1O)[C@]21CCCN2CCC[C@@H]21 |
17,488,063 | 17488063 | Subsequent multistep reduction with LiAlH₄ gave a tetrol, which was cyclized to the final product (-)-eudesmin (26) by dehydration again using BF₃·OEt₂. | cyclization | tetrol | (-)-eudesmin (26) | null | BF₃·OEt₂ | null | null | null | success | null | null | dehydration step | null | COc1ccc([C@@H]2OC[C@@H]3[C@H]2CO[C@H]3c2ccc(OC)c(OC)c2)cc1OC |
27,018,601 | 27018601 | Cyclobutene rac-328 was quantitatively obtained from maleic anhydride and propargyl alcohol upon irradiation of a MeCN solution in the presence of acetophenone. | [2 + 2] photocycloaddition | maleic anhydride, propargyl alcohol | cyclobutene rac-328 | acetophenone | null | MeCN | null | quantitative | success | null | null | irradiation | null | C1=CCC1 |
17,410,611 | 17410611 | treatment of 146 with HCl resulted in the formation of [{(IPr)PdCl2}2] (110). | substitution | compound 146, HCl | [{(IPr)PdCl2}2] | null | null | null | null | null | success | null | null | null | null | [Cl][Pd][Cl] |
36,677,727 | 36677727 | 3-Nitro-4-(trichloromethyl)pyrrolidine 30 was obtained through the cycloaddition of trans-3,3,3-trichloro-1-nitroprop-1-ene 29 with azomethine ylide (obtained from the condensation of paraformaldehyde and sarcosine in refluxing benzene). | cycloaddition | trans-3,3,3-trichloro-1-nitroprop-1-ene, paraformaldehyde, sarcosine | 3-Nitro-4-(trichloromethyl)pyrrolidine | null | null | benzene | null | null | success | reflux | null | null | null | O=[N+]([O-])C1CNCC1C(Cl)(Cl)Cl |
16,011,327 | 16011327 | The N-arylation under solid-phase conditions was carried out in the presence of P(t-Bu)₃ and Cy₂NMe in toluene at 80 °C when it involved the substitution of the C-N bond for a C-Br bond for the intramolecular cyclization of immobilized α-acetamidoβ-(o-bromophenyl)acrylates. | Buchwald/Hartwig intramolecular N-arylation | immobilized α-acetamidoβ-(o-bromophenyl)acrylates | indole | Cy₂NMe | Pd₂(dba)₃, P(t-Bu)₃ | toluene | null | null | success | 80 °C | null | Solid-phase synthesis; substitution of C-N bond for C-Br bond. | null | c1ccc2[nH]ccc2c1 |
21,506,178 | 21506178 | Furan-2-carboxylic acid was monoarylated regioselectively, whereas 3-furancarboxylic acid did not lead to any of the desired product. | decarboxylative cross-coupling | 3-furancarboxylic acid | desired product | null | null | null | 0 | unspecified | failed | null | null | null | null | O=C(O)c1ccoc1 |
18,072,806 | 18072806 | 6-(2-Dimethylaminonaphthoyl)alanine (DANA) was prepared by Imperiali through the asymmetric alkylation of 2 with α-bromoketone 54 using 19e as a phase-transfer catalyst. | asymmetric alkylation | 2, α-bromoketone 54 | 6-(2-Dimethylaminonaphthoyl)alanine | null | 19e | null | null | null | success | null | null | null | null | CCN(CC)N=O |
19,831,366 | 19831366 | A catalytic enantioselective [4 + 2] cycloaddition of cyclopentadiene 2 with propirolamide derivative 17a yielded bridged cycloadduct 18 with 50% yield and 93% ee at -78 °C. | cycloaddition | cyclopentadiene 2, propirolamide derivative 17a | bridged cycloadduct 18 | null | null | null | 50 | unspecified | success | -78 °C | null | null | 93% ee | C1=CCC=C1 |
19,831,366 | 19831366 | A catalytic enantioselective [4 + 2] cycloaddition of cyclopentadiene 2 with propirolamide derivative 17a yielded bridged cycloadduct 18 with 91% yield and 88% ee at -40 °C. | cycloaddition | cyclopentadiene 2, propirolamide derivative 17a | bridged cycloadduct 18 | null | null | null | 91 | unspecified | success | -40 °C | null | null | 88% ee | C1=CCC=C1 |
17,525,926 | 17525926 | High levels of enantioselectivity can be obtained by performing the asymmetric Michael addition of glycine diphenylmethyl ester Schiff base 51 to simple alkyl vinyl ketones, such as methyl vinyl ketone, in diisopropyl ether at 0 °C in the presence of 50 mol % Cs₂CO₃ and 1 mol % ent-50 as the catalyst. | Michael addition | glycine diphenylmethyl ester Schiff base 51, methyl vinyl ketone | methyl vinyl ketone adduct | Cs₂CO₃ | ent-50 | diisopropyl ether | null | null | success | 0 °C | null | 50 mol % Cs₂CO₃, 1 mol % ent-50 | null | C=CC(C)=O |
23,082,820 | 23082820 | the 1,3-cis-difunctionalized cyclopentane 89 or its bicyclic lactol 90a, when treated with 5 mol% of Fe(CO)₅, smoothly evolved to the expected bridged hydroxy ketone 91 as the only observed diastereomer. | domino isomerization–intramolecular aldolization | compound 89, compound 90a | 4-hydroxy-bicyclo[3.2.1]octan-2-one | null | Fe(CO)₅ | null | null | unspecified | success | null | null | 5 mol% catalyst used. | null | O=C1CC(O)C2CCC1C2 |
11,848,752 | 11848752 | Isomünchnones derived from the Rh2(OAc)4-catalyzed reaction of acyclic diazo imides 150–154 underwent facile cycloaddition onto the tethered π-bond to provide polycyclic adducts 155–159. | 1,3-dipolar cycloaddition | acyclic diazo imides 150–154 | polycyclic adducts 155–159 | null | Rh2(OAc)4 | null | null | null | success | null | null | Tandem reaction involving formation of isomünchnone followed by intramolecular cycloaddition. | null | CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Rh+3].[Rh+3] |
11,848,752 | 11848752 | Treatment of cyclic diazo imides 160–162 with Rh2(OAc)4 led to good yields of cycloadducts 163-165. | 1,3-dipolar cycloaddition | cyclic diazo imides 160–162 | cycloadducts 163-165 | null | Rh2(OAc)4 | null | null | unspecified | success | null | null | Tandem reaction involving formation of isomünchnone followed by intramolecular cycloaddition. | null | CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Rh+3].[Rh+3] |
25,337,795 | 25337795 | The Pd-catalyzed amidation of 2b to the amidation product 3b was performed using 2 mol% Pd(OAc)₂ and 4 mol% XPhos, with 2.2 equivalents of K₂CO₃ in Dioxane MeOH at 90 °C for 20 h. | amidation | 2b | 3b | K2CO3 | Pd(OAc)2, XPhos | Dioxane, MeOH | null | null | success | 90 °C | 20 h | 2.2 equiv K2CO3 | null | CS(=O)(=O)N1CC(c2ccccc2)=Cc2ccccc21 |
35,423,221 | 35423221 | Hekmati and co-workers used pramipexole–MWCNTs/palladium as a phosphine-free reusable heterogeneous catalyst for the Sonogashira coupling reaction of a wide range of aryl halides (including aryl bromides, iodides, and chlorides) with phenylacetylene. | Sonogashira coupling | aryl halides, phenylacetylene | corresponding products | null | pramipexole–MWCNTs/Pd | null | null | unspecified | success | null | null | Phosphine-free reusable heterogeneous catalyst. | null | C#Cc1ccccc1 |
12,744,695 | 12744695 | Ammonolyzis and glycosylation of the 4'-OMe analogues 263a-c afforded the desired 8-aza-7-deazaadenine (264c). | ammonolyzis, glycosylation | 263c | 8-aza-7-deazaadenine (264c) | null | null | null | null | null | success | null | null | null | null | Nc1ncnc2c1CN=N2 |
12,744,695 | 12744695 | Whale et al. reported the palladium-catalyzed Heck reaction of 5-iodouridine (52) with esters of acrylic acid to generate a series of esters of the acid (E)-5-(2-carboxyvinyl)uridine (97a–r) in poor to moderate yield. | Heck reaction | 5-iodouridine, esters of acrylic acid | (E)-5-(2-carboxyvinyl)uridine | null | palladium | null | null | unspecified | success | null | null | yield was poor to moderate | null | O=C(O)/C=C/c1cn([C@@H]2O[C@H](CO)[C@@H](O)[C@H]2O)c(=O)[nH]c1=O |
25,635,524 | 25635524 | This photocatalyzed reaction was performed by irradiation of a mixture of the steroidal dienones with trifluoromethyl iodide in the presence of pyridine with ultraviolet light (3500 Å) at room temperature, however, the yields were low (32–42%). | trifluoromethylation | steroidal dienones, trifluoromethyl iodide | α-trifluoromethylated enones | pyridine | null | null | 37 | unspecified | success | room temperature | null | irradiation with ultraviolet light (3500 Å); yield range 32-42% | null | FC(F)(F)I |
17,091,931 | 17091931 | Benzo[4,5]furopyridine (538) can be obtained in a 64% yield by the cross-coupling of diaryl ether 537, when catalyzed by Pd(OAc)₂ under ligand-free conditions. | cross-coupling | diaryl ether 537 | benzo[4,5]furopyridine | null | Pd(OAc)₂ | null | 64 | unspecified | success | null | null | ligand-free conditions | null | c1ccc2c(c1)oc1cccnc12 |
11,848,917 | 11848917 | By the addition of 150 mol % of ZnI₂, the reaction of cyclic nitrone 57 and alkene 133 gives endo-135 as the major isomer with a yield of 82% and a reaction time of 48 h at 35 °C. | 1,3-dipolar cycloaddition | compound 57, compound 133 | compound 135 | ZnI₂ | null | null | 82 | unspecified | success | 35 °C | 48 h | 150 mol % ZnI₂ used; endo:exo ratio improved to 89:11; diastereofacial selectivity improved to 92% de. | null | [I-].[I-].[Zn+2] |
11,848,917 | 11848917 | The reaction of 2-[(trimethylsilyl)oxy]furan 143 with chiral nitrones 144 catalyzed by stoichiometric amounts of an activator such as (+)- or (−)-(1pc)₂BOTf gives 145a as the major stereoisomer. | formal 1,3-dipolar cycloaddition | 2-[(trimethylsilyl)oxy]furan, compound 144 | compound 145a | (+)- or (−)-(1pc)₂BOTf | null | null | null | null | success | null | null | Stoichiometric amounts of activator used; high endo selectivity and diastereofacial selectivity up to 96% de. | null | C[Si](C)(C)Oc1ccco1 |
11,848,917 | 11848917 | When TMSOTf is used as the catalyst, the reaction of 2-[(trimethylsilyl)oxy]furan 143 with chiral nitrones 144 proceeds via route B to give the butenolide 148 as the product. | formal 1,3-dipolar cycloaddition | 2-[(trimethylsilyl)oxy]furan, compound 144 | compound 148 | null | TMSOTf | null | null | null | success | null | null | Reaction proceeds via intermediate 146 and route B. | null | C[Si](C)(C)OS(=O)(=O)C(F)(F)F |
15,991,198 | 15991198 | The final step of the total synthesis of rapamycin involved a double Stille coupling process and proceeded from the naked precursor 72 and trans-1,2-distannyl ethylene 73, under the influence of [PdCl₂(MeCN)₂] (20 mol%) and iPr₂NEt as a dilute solution in DMF/THF at ambient temperature. | double Stille coupling | precursor 72, trans-1,2-distannyl ethylene 73 | rapamycin (76) | iPr₂NEt | [PdCl₂(MeCN)₂] | DMF/THF | null | null | success | ambient temperature | null | 20 mol% [PdCl₂(MeCN)₂], dilute solution | null | CO[C@H]1C[C@@H]2CC[C@@H](C)[C@@](O)(O2)C(=O)C(=O)N2CCCC[C@H]2C(=O)O[C@H]([C@H](C)C[C@@H]2CC[C@@H](O)[C@H](OC)C2)CC(=O)[C@H](C)/C=C(\C)[C@@H](O)[C@@H](OC)C(=O)[C@H](C)C[C@H](C)/C=C/C=C/C=C/1C |
11,848,752 | 11848752 | When rhodium(II) acetate was used as the catalyst [for α-diazo ketone 338], cyclopropane 339 was not formed. | carbenoid addition | α-diazo ketone 338 | cyclopropane 339 | null | rhodium(II) acetate | null | 0 | unspecified | failed | null | null | null | null | C1CC1 |
11,709,863 | 11709863 | the Pd₂(dba)₃·CHCl₃ + 8AsPh₃ completely failed to catalyze the reaction [of chloropurine 244 and Zn(CN)₂ (245)]. | cross-coupling | compound 244, zinc cyanide | compound 246 | AsPh₃ | Pd₂(dba)₃·CHCl₃ | NMP | 0 | unspecified | failed | 90 °C | null | null | null | [C-]#N.[C-]#N.[Zn+2] |
11,709,863 | 11709863 | Treatment of boronate ester 247 and enantiopure organozinc reagent 248 with a Pd(OAc)₂/TFP catalyst system in benzene afforded a 50-55% yield of the desired product 249. | cross-coupling | compound 247, compound 248 | compound 249 | TFP | Pd(OAc)₂ | benzene | 52.5 | unspecified | success | null | null | Yield reported as 50-55%. | null | N[C@@H](Cc1ccc(B(O)O)cc1)C(=O)O |
36,080,422 | 36080422 | Hiyama coupling reaction of iodobenzene 76 and phenyl trimethoxysilane 8 resulted in 96% yield of biaryl product 92, catalyzed by Pd/ZnO nanoparticles using K2CO3 as the base in ethylene glycol under an air atmosphere at 100 °C. | Hiyama coupling | iodobenzene 76, phenyl trimethoxysilane 8 | biaryl product 92 | K2CO3 | Pd/ZnO nanoparticles | ethylene glycol | 96 | unspecified | success | 100 °C | null | air atmosphere | null | c1ccc(-c2ccccc2)cc1 |
36,080,422 | 36080422 | The reaction of 4-methylphenylbromide 123 was performed with phenyl trimethoxysilane 8 using PS-PdONPs (1.5 mol%) catalyst, TBAC in aqueous NaOH solution at 80 °C under aerobic conditions for 3 h, which afforded 4-methylbiphenyl 79 in 88% yield. | Hiyama coupling | 4-methylphenylbromide 123, phenyl trimethoxysilane 8 | 4-methylbiphenyl 79 | TBAC, NaOH | PS-PdONPs | aqueous NaOH solution | 88 | unspecified | success | 80 °C | 3 h | aerobic conditions, 1.5 mol% catalyst | null | Cc1ccc(-c2ccccc2)cc1 |
36,080,422 | 36080422 | The catalytic effect of PS-PdNPs on the Hiyama coupling reaction was observed, and it was noticed that the desired coupled product was not attained, but 4,4′-dimethylbiphenyl 124, the Ullmann coupling product, was afforded in 99% yield. | Ullmann coupling | 4-methylphenylbromide 123 | 4,4′-dimethylbiphenyl 124 | TBAC, NaOH | PS-PdNPs | aqueous NaOH solution | 99 | unspecified | success | 80 °C | 3 h | aerobic conditions; described as the result of a failed Hiyama coupling attempt | null | Cc1ccc(-c2ccc(C)cc2)cc1 |
36,080,422 | 36080422 | The reaction of iodobenzene 76 with phenyl trimethoxysilane 8 using 4 mol% Pd(OAc)2 in 115 and CH3CN and 1-butyl-3-methylimidazolium fluoride [bmim]F at 70–120 °C for 8 h afforded the desired biphenyl derivative in 98% yield. | Hiyama cross-coupling | iodobenzene, phenyl trimethoxysilane | biphenyl derivative | 1-butyl-3-methylimidazolium fluoride | Pd(OAc)2 | CH3CN, 115 | 98 | unspecified | success | 70–120 °C | 8 h | 4 mol% Pd(OAc)2 | null | Ic1ccccc1 |
36,080,422 | 36080422 | The reaction of 11 with phenyltriethoxysilane 16 was carried out by utilizing Pd@M-SBA-15 (0.5 mol%) catalyst, acetic acid, and TBAF.3H2O in toluene at 100 °C in the air for 24 h resultantly afforded the corresponding biphenyl derivative 38 in 92% yield. | Hiyama cross-coupling | 11, phenyltriethoxysilane | biphenyl derivative 38 | acetic acid, TBAF.3H2O | Pd@M-SBA-15 | toluene | 92 | unspecified | success | 100 °C | 24 h | in the air, 0.5 mol% catalyst | null | CC(=O)c1ccc(Br)cc1 |
27,018,601 | 27018601 | Enantiomerically pure N-cinnamyl-4-vinyloxazolidin-2-one (31) underwent a highly diastereoselective [2 + 2] photocycloaddition to product 32. | [2 + 2] photocycloaddition | N-cinnamyl-4-vinyloxazolidin-2-one | 32 | null | Cu(I) | null | null | null | success | null | null | null | null | C=CC1COC(=O)N1CC=Cc1ccccc1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was employed using 7b (0.10 g, 0.41 mmol), dry ammonium acetate (0.31 g, 4.10 mmol), 2d (0.13 g, 0.41 mmol), and dry methanol (5 mL) at 100 °C for 24 h to yield 36 mg (0.10 mmol, 26.1%) of 2-Phenyl-4-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline (33) as a white solid. | null | 7b, 2d | 2-Phenyl-4-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | methanol | 26.1 | isolated | success | 100 °C | 24 h | 36 mg isolated | null | c1ccc(-c2cc(-c3cccnc3)c3c(n2)-c2ccsc2CC3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed using 6b (0.08 g, 0.34 mmol), dry ammonium acetate (0.26 g, 3.40 mmol), 2a (0.11 g, 0.34 mmol), and dry methanol (2.0 mL) at 100 °C for 12 h to yield 52 mg (45.4%) of 2-(Pyridin-2-yl)-4-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline (14) as a white solid. | null | 6b, 2a | 2-(Pyridin-2-yl)-4-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 45.4 | isolated | success | 100 °C | 12 h | 52 mg isolated as a white solid | null | c1ccc(-c2cc(-c3cccnc3)c3c(n2)-c2ncccc2CC3)nc1 |
11,848,752 | 11848752 | When a-diazo ketone 489a containing a terminal triple bond was treated with Rh₂(OAc)₄ in benzene with diallyl sulfide, cyclohexenone 492a was formed in 80% yield. | alkyne metathesis-ylide formation-sigmatropic rearrangement | compound 489a, diallyl sulfide | cyclohexenone 492a | null | Rh₂(OAc)₄ | benzene | 80 | unspecified | success | null | null | null | null | O=C1C=CCCC1 |
11,848,752 | 11848752 | Subjection of a-diazo ketone 489b (R = Ph) to the same reaction conditions [Rh₂(OAc)₄ in benzene with diallyl sulfide] gave cyclopentenone 492b as the exclusive product. | alkyne metathesis-ylide formation-sigmatropic rearrangement | compound 489b, diallyl sulfide | cyclopentenone 492b | null | Rh₂(OAc)₄ | benzene | null | quantitative | success | null | null | exclusive product | null | O=C1C=CCC1 |
11,093,193 | 11093193 | In the reaction of the isopropyl-substituted alkenylcarbene-chromium complex 270 with sterically demandingly substituted terminal alkynes such as 3,3-dimethylbutyne (271), the seven-membered heterocycle 274 was obtained as a byproduct. | [5+2] cocyclization | isopropyl-substituted alkenylcarbene-chromium complex 270, 3,3-dimethylbutyne | 274 | null | null | null | null | null | success | null | null | Product 274 was obtained as a byproduct in addition to acylcyclopentenones 272 and 273. | null | C1=CCCNC=C1 |
11,093,193 | 11093193 | To favor formation of the dihydroazepine 274 possibly still further two equivalents of triphenylphosphane were added to the reaction mixture... Indeed, in this way the yield of 274 could be increased to 23%. | [5+2] cocyclization | isopropyl-substituted alkenylcarbene-chromium complex 270, 3,3-dimethylbutyne | 274 | triphenylphosphane | null | null | 23 | unspecified | success | null | null | Two equivalents of triphenylphosphane were added. | null | C1=CCCNC=C1 |
11,093,193 | 11093193 | In the reaction of 270 with 182 in pyridine the product ratio was shifted towards the dihydroazepine 274, and at the same time under these conditions the tricarbonylchromium fragment was cleaved off. After purification by column chromatography the methylenepyrrolidine 276 was formed. | [5+2] cocyclization | 270, 182 | methylenepyrrolidine 276 | null | null | pyridine | null | null | success | null | null | The reaction shifted towards dihydroazepine 274, but the tricarbonylchromium fragment was cleaved off, leading to 276 after purification by column chromatography. | null | C=C1CCCN1 |
22,000,119 | 22000119 | The reaction of 7c (0.08 g, 0.35 mmol), dry ammonium acetate (0.27 g, 3.50 mmol), 2d (0.11 g, 0.35 mmol), and glacial acetic acid (0.5 mL) at 90 °C for 14 h yielded 25 mg (0.07 mmol, 20.7%) of 2-Phenyl-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (37) as a white solid. | null | 7c, 2d | 2-Phenyl-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 20.7 | isolated | success | 90 °C | 14 h | 0.08 g 7c, 0.27 g ammonium acetate, 0.11 g 2d, 0.5 mL glacial acetic acid | null | c1ccc(-c2cc(-c3ccncc3)c3c(n2)-c2ccsc2CC3)cc1 |
27,960,274 | 27960274 | Yamamoto et al. promoted these reactions by a combination of AgOTf (15 mol %) with BINAP (6 mol %) which led to the corresponding chiral β-hydroxy carbonyl compounds in enantioselectivities of up to 95% ee and moderate to good yields (33–83%). | aldol reaction | tributyltin enolates, aldehydes | chiral β-hydroxy carbonyl compounds | null | AgOTf, BINAP | null | 83 | unspecified | success | null | null | AgOTf 15 mol %, BINAP 6 mol %; yield range 33-83% | null | c1ccc(P(c2ccccc2)c2ccc3ccccc3c2-c2c(P(c3ccccc3)c3ccccc3)ccc3ccccc23)cc1 |
27,960,274 | 27960274 | Yamamoto et al. developed an alternative asymmetric aldol reaction occurring between benzaldehyde and alkenyl trichloroacetate derived from cyclohexanone based on the same catalyst system using only 5 mol % of Bu3SnOMe, which resulted in the formation of the corresponding aldol product in 82% yield. | aldol reaction | benzaldehyde, alkenyl trichloroacetate derived from cyclohexanone | aldol product | Bu3SnOMe | AgOTf, BINAP | null | 82 | unspecified | success | null | null | 5 mol % Bu3SnOMe | null | O=C1CCCCC1 |
27,960,274 | 27960274 | In 2009, the same authors applied this catalyst system to the asymmetric aldol reactions of alkenyl trichloroacetates 1a–1c with α-ketoesters 2a–2d. The process was promoted by a combination of 20 mol % of AgOTf, 10 mol % of (R)-BINAP, and 8 mol % of Bu2Sn(OMe)2 in the presence of methanol as superstoichiometric additi... | aldol reaction | alkenyl trichloroacetates 1a–1c, α-ketoesters 2a–2d | aldol product | Bu2Sn(OMe)2, methanol | AgOTf, (R)-BINAP | THF | null | null | success | -20 °C | null | 20 mol % AgOTf, 10 mol % (R)-BINAP, 8 mol % Bu2Sn(OMe)2, methanol as superstoichiometric additive | null | c1ccc(P(c2ccccc2)c2ccc3ccccc3c2-c2c(P(c3ccccc3)c3ccccc3)ccc3ccccc23)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6c (0.08 g, 0.35 mmol), dry ammonium acetate (0.27 g, 3.50 mmol), 2d (0.11 g, 0.35 mmol), and dry methanol (2.5 mL) at 95 °C for 14 h to yield 70 mg (0.21 mmol, 60.2%) of 2-Phenyl-4-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline (21) as a white solid. | null | 6c, 2d | 2-Phenyl-4-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 60.2 | isolated | success | 95 °C | 14 h | 70 mg isolated | null | c1ccc(-c2cc(-c3ccncc3)c3c(n2)-c2ncccc2CC3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was employed using 7a (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), 2d (0.10 g, 0.30 mmol), and glacial acetic acid (0.5 mL) at 100 °C for 12 h to yield 52 mg (50.7%) of 2-Phenyl-4-(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline (29) as an off-white solid. | null | 7a, 2d | 2-Phenyl-4-(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 50.7 | isolated | success | 100 °C | 12 h | 52 mg isolated; product obtained as an off-white solid | null | c1ccc(-c2cc(-c3ccccn3)c3c(n2)-c2ccsc2CC3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was used with 7b (0.10 g, 0.40 mmol), dry ammonium acetate (0.30 g, 4.00 mmol), 2a (0.13 g, 0.40 mmol), and dry MeOH (2.5 mL) at 90 °C for 21 h to yield 45 mg (32.3%) of 2-(Pyridin-2-yl)-4-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline (30) as a white solid. | null | 7b, 2a | 2-(Pyridin-2-yl)-4-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | MeOH | 32.3 | isolated | success | 90 °C | 21 h | 45 mg isolated; dry ammonium acetate and dry MeOH used. | null | c1ccc(-c2cc(-c3cccnc3)c3c(n2)-c2ccsc2CC3)nc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6b (0.12 g, 0.50 mmol), dry ammonium acetate (0.38 g, 5.00 mmol), 2d (0.16 g, 0.50 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 127 mg (0.38 mmol, 76.0%) of 2-Phenyl-4-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline (17) as a white solid. | null | 6b, 2d | 2-Phenyl-4-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 76 | isolated | success | 100 °C | 12 h | 127 mg isolated | null | c1ccc(-c2cc(-c3cccnc3)c3c(n2)-c2ncccc2CC3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6c (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), 2a (0.10 g, 0.30 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 41 mg (0.12 mmol, 40.6%) of 2-(Pyridin-2-yl)-4-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline (18) as a white solid. | null | 6c, 2a | 2-(Pyridin-2-yl)-4-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 40.6 | isolated | success | 100 °C | 12 h | 41 mg isolated as a white solid | null | c1ccc(-c2cc(-c3ccncc3)c3c(n2)-c2ncccc2CC3)nc1 |
22,000,119 | 22000119 | The reaction of 7c (0.05 g, 0.22 mmol) with dry ammonium acetate (0.17 g, 2.20 mmol) and 2b (0.07 g, 0.22 mmol) in glacial acetic acid (0.5 mL) at 100 °C for 14 h yielded 26 mg (34.6%) of 2-(Pyridin-3-yl)-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (35) as a white solid. | null | 7c, 2b | 2-(Pyridin-3-yl)-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 34.6 | isolated | success | 100 °C | 14 h | 26 mg isolated | null | c1cncc(-c2cc(-c3ccncc3)c3c(n2)-c2ccsc2CC3)c1 |
22,000,119 | 22000119 | Using the procedure from Section 4.5, 7a (0.06 g, 0.25 mmol), dry ammonium acetate (0.19 g, 2.50 mmol), 2b (0.08 g, 0.25 mmol), and glacial acetic acid (0.5 mL) were reacted at 100 °C for 20 h to yield 43 mg (51.6%) of 4-(Pyridin-2-yl)-2-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline (27) as a light yellow solid. | null | 7a, 2b | 4-(Pyridin-2-yl)-2-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate, glacial acetic acid | null | glacial acetic acid | 51.6 | isolated | success | 100 °C | 20 h | 43 mg isolated; product obtained as a light yellow solid | null | c1ccc(-c2cc(-c3cccnc3)nc3c2CCc2sccc2-3)nc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6a (0.09 g, 0.40 mmol), dry ammonium acetate (0.31 g, 4.00 mmol), 2b (0.13 g, 0.40 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 92 mg (68.3%) of 11 as a white solid. | null | 6a, 2b | 4-(Pyridin-2-yl)-2-(pyridin-3-yl)-5, 6-dihydro-1, 10-phenanthroline | ammonium acetate | null | methanol | 68.3 | isolated | success | 100 °C | 12 h | 92 mg isolated; 0.09 g of 6a and 0.13 g of 2b used | null | c1ccc(-c2cc(-c3cccnc3)nc3c2CCc2cccnc2-3)nc1 |
11,848,752 | 11848752 | diazo ketone 589 was cleanly converted into methylene cyclooctene 590. | rearrangement | diazo ketone 589 | methylene cyclooctene 590 | null | null | null | null | unspecified | success | null | null | cleanly converted | null | C=C1C=CCCCCC1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was employed with 7d (0.09 g, 0.37 mmol), dry ammonium acetate (0.28 g, 3.70 mmol), 2c (0.12 g, 0.37 mmol), and dry methanol (2.5 mL) at 100 °C for 36 h to yield 23 mg (0.06 mmol, 18.0%) of 4-Phenyl-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (40) as a white solid. | null | 7d, 2c | 4-Phenyl-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | methanol | 18 | isolated | success | 100 °C | 36 h | 23 mg isolated | null | c1ccc(-c2cc(-c3ccncc3)nc3c2CCc2sccc2-3)cc1 |
22,000,119 | 22000119 | Compound 38 (4-Phenyl-2-(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline) was synthesized using 7d (0.12 g, 0.50 mmol), dry ammonium acetate (0.38 g, 5.00 mmol), 2a (0.16 g, 0.50 mmol), and dry methanol (5 mL) at 100 °C for 48 h, yielding 45 mg (26.6%) of the product as a white solid. | null | 7d, 2a | 4-Phenyl-2-(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | methanol | 26.6 | isolated | success | 100 °C | 48 h | 45 mg isolated | null | c1ccc(-c2cc(-c3ccccn3)nc3c2CCc2sccc2-3)cc1 |
11,749,314 | 11749314 | Palladium-catalyzed cyclization of vinylallene 458 in the presence of carbon monoxide provided a highly functionalized cyclononadienone 459. | cycloaddition | vinylallene 458, carbon monoxide | cyclononadienone 459 | null | palladium | null | null | null | success | null | null | The reaction is described as a [4+4+1] cycloaddition. | null | O=C1C=CC=CCCCC1 |
22,000,119 | 22000119 | A procedure described at Section 4.4 was used with 6a (0.08 g, 0.34 mmol), dry ammonium acetate (0.26 g, 3.40 mmol), 2c (0.11 g, 0.34 mmol) and dry methanol (2.0 mL) at 100 °C for 12 h to yield 72 mg (63.4%) of 4-(Pyridin-2-yl)-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline (12) as a white solid. | null | 6a, 2c | 4-(Pyridin-2-yl)-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 63.4 | isolated | success | 100 °C | 12 h | 72 mg isolated | null | c1ccc(-c2cc(-c3ccncc3)nc3c2CCc2cccnc2-3)nc1 |
22,000,119 | 22000119 | Reacting 7c (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), 2a (0.10 g, 0.30 mmol), and glacial acetic acid (0.5 mL) at 100 °C for 12 h yielded 37 mg (0.11 mmol, 36.1%) of 2-(Pyridin-2-yl)-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (34) as a light yellow solid. | null | 7c, 2a | 2-(Pyridin-2-yl)-4-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 36.1 | isolated | success | 100 °C | 12 h | 37 mg isolated | null | c1ccc(-c2cc(-c3ccncc3)c3c(n2)-c2ccsc2CC3)nc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6a (0.09 g, 0.40 mmol), dry ammonium acetate (0.31 g, 4.00 mmol), 2d (0.13 g, 0.40 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 124 mg (0.37 mmol, 92.4%) of 13 as a white solid. | null | 6a, 2d | 2-Phenyl-4-(pyridin-2-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 92.4 | isolated | success | 100 °C | 12 h | 124 mg of product obtained as a white solid | null | c1ccc(-c2cc(-c3ccccn3)c3c(n2)-c2ncccc2CC3)cc1 |
22,000,119 | 22000119 | Compound 23 (4-Phenyl-2-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline) was synthesized by reacting 6d (0.09 g, 0.40 mmol), dry ammonium acetate (0.30 g, 4.00 mmol), and 2b (0.13 g, 0.40 mmol) in dry methanol (2.5 mL) at 100 °C for 16 h, yielding 81 mg (60.3%) of the product as a white solid. | null | 6d, 2b | 4-Phenyl-2-(pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 60.3 | isolated | success | 100 °C | 16 h | 0.09 g 6d, 0.30 g ammonium acetate, 0.13 g 2b, 2.5 mL dry methanol | null | c1ccc(-c2cc(-c3cccnc3)nc3c2CCc2cccnc2-3)cc1 |
34,418,288 | 34418288 | For the preparation of the catalyst (6), 1-methylimidazole and 3-trimethoxysilylpropyl chloride compounds were mixed and refluxed for 48 h to generate 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium chloride. | alkylation | 1-methylimidazole, 3-trimethoxysilylpropyl chloride | 1-methyl-3-(3-trimethoxysilylpropyl) imidazolium chloride | null | null | null | null | null | success | reflux | 48 h | null | null | CO[Si](CCC[n+]1ccn(C)c1)(OC)OC.[Cl-] |
22,000,119 | 22000119 | Compound 24 (4-Phenyl-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline) was synthesized using 6d (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), and 2c (0.10 g, 0.30 mmol) in dry methanol (2.5 mL) at 100 °C for 16 h, yielding 26 mg (26.2%) of the product as a white solid. | null | 6d, 2c | 4-Phenyl-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 26.2 | isolated | success | 100 °C | 16 h | 26 mg isolated; dry ammonium acetate and dry methanol used | null | c1ccc(-c2cc(-c3ccncc3)nc3c2CCc2cccnc2-3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was employed with 7c (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), 2c (0.10 g, 0.30 mmol), and glacial acetic acid (0.5 mL) at 100 °C for 16 h to yield 28 mg (0.08 mmol, 27.6%) of 2,4-Di(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (36) as an off-white solid. | null | 7c, 2c | 2,4-Di(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate, glacial acetic acid | null | glacial acetic acid | 27.6 | isolated | success | 100 °C | 16 h | 28 mg isolated; off-white solid | null | c1cc(-c2cc(-c3ccncc3)c3c(n2)-c2ccsc2CC3)ccn1 |
22,000,119 | 22000119 | The reaction of 7a (0.10 g, 0.41 mmol), dry ammonium acetate (0.32 g, 4.10 mmol), 2a (0.13 g, 0.41 mmol), and glacial acetic acid (1.5 mL) at 100 °C for 20 h yielded 43 mg (0.12 mmol, 31.0%) of 2,4-Di(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline (26) as an off-white solid. | null | 7a, 2a | 2,4-Di(pyridin-2-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate, glacial acetic acid | null | glacial acetic acid | 31 | isolated | success | 100 °C | 20 h | 43 mg isolated | null | c1ccc(-c2cc(-c3ccccn3)c3c(n2)-c2ccsc2CC3)nc1 |
22,000,119 | 22000119 | Using the procedure described at Section 4.5, 7d (0.09 g, 0.37 mmol), dry ammonium acetate (0.28 g, 3.70 mmol), 2b (0.12 g, 0.37 mmol), and glacial acetic acid (1 mL) were reacted at 100 °C for 20 h to yield 30 mg (24.2%) of 4-Phenyl-2-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline (39) as a light yellow solid. | null | 7d, 2b | 4-Phenyl-2-(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 24.2 | isolated | success | 100 °C | 20 h | 30 mg isolated; light yellow solid | null | c1ccc(-c2cc(-c3cccnc3)nc3c2CCc2sccc2-3)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6a (0.10 g, 0.42 mmol), dry ammonium acetate (0.32 g, 4.20 mmol), 2a (0.13 g, 0.42 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 60 mg (0.19 mmol, 42.6%) of 2,4-Di(pyridin-2-yl)-5,6-dihydro-1,10-phenanthroline (10) as a light yellow solid. | null | 6a, 2a | 2,4-Di(pyridin-2-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 42.6 | isolated | success | 100 °C | 12 h | 60 mg isolated | null | c1ccc(-c2cc(-c3ccccn3)c3c(n2)-c2ncccc2CC3)nc1 |
22,000,119 | 22000119 | Using the procedure from Section 4.5, 7b (0.15 g, 0.62 mmol), dry ammonium acetate (0.48 g, 6.20 mmol), 2b (0.30 g, 0.93 mmol), and dry methanol (5 mL) were reacted at 100 °C for 24 h to yield 25 mg (12.0%) of 2,4-Di(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline (31) as a white solid. | null | 7b, 2b | 2,4-Di(pyridin-3-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | methanol | 12 | isolated | success | 100 °C | 24 h | 25 mg isolated; dry ammonium acetate and dry methanol used | null | c1cncc(-c2cc(-c3cccnc3)c3c(n2)-c2ccsc2CC3)c1 |
16,011,324 | 16011324 | Alkylation of the dihydroisoquinoline 235 with trimethylsilylmethyl triflate gave the intermediate iminium salt 236, which was treated with cesium fluoride to give the cycloadduct 237 (Scheme 63). | alkylation | compound 235, trimethylsilylmethyl triflate | compound 236 | null | null | null | null | null | success | null | null | null | null | C1=Cc2ccccc2CN1 |
16,011,324 | 16011324 | Alkylation of the substituted 3,4-dihydroisoquinoline 244 with the iodide 245 gave the salt 246, which was not isolated but treated immediately with base and heated in 1,2-dichloroethane... to give lamellarin K triisopropyl ether 247. | alkylation | substituted 3,4-dihydroisoquinoline 244, iodide 245 | compound 246 | null | null | null | null | null | success | null | null | Salt 246 was not isolated. | null | C1=NCCc2ccccc21 |
22,000,119 | 22000119 | A procedure described at Section 4.4 was used with 6d (0.09 g, 0.40 mmol), dry ammonium acetate (0.30 g, 4.00 mmol), 2a (0.13 g, 0.40 mmol), and dry methanol (2.5 mL) at 100 °C for 16 h to yield 88 mg (65.6%) of 4-Phenyl-2-(pyridin-2-yl)-5,6-dihydro-1,10-phenanthroline (22) as a white solid. | null | 6d, 2a | 4-Phenyl-2-(pyridin-2-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 65.6 | isolated | success | 100 °C | 16 h | 88 mg (0.26 mmol) isolated as a white solid; dry methanol used | null | c1ccc(-c2cc(-c3ccccn3)nc3c2CCc2cccnc2-3)cc1 |
27,960,274 | 27960274 | The asymmetric vinylogous Mannich reaction of aromatic, heteroaromatic, and aliphatic N-aryl aldimines 37a–37h with N-Boc-2-(trimethylsiloxy)pyrrole 32 afforded chiral α,β-unsaturated δ-amino-γ-butyrolactams 38a–38h with yields of 36–99%. | vinylogous Mannich reaction | N-aryl aldimines 37a–37h, N-Boc-2-(trimethylsiloxy)pyrrole 32 | chiral α,β-unsaturated δ-amino-γ-butyrolactams 38a–38h | null | null | null | null | unspecified | success | null | null | Yields ranged from 36-99%. | null | CC(C)(C)OC(=O)n1cccc1O[Si](C)(C)C |
27,960,274 | 27960274 | A three-component Mannich reaction between alkyl-substituted aldehydes 5a–5g, o-thiomethyl-p-anisidine 17, and N-Boc-2-(trimethylsiloxy)pyrrole 32 using a catalyst system at 5 mol % loading afforded vicinal chiral diamino carbonyl products 39a–39g in yields of 51–92%. | Mannich reaction | alkyl-substituted aldehydes 5a–5g, o-thiomethyl-p-anisidine 17, N-Boc-2-(trimethylsiloxy)pyrrole 32 | vicinal chiral diamino carbonyl products 39a–39g | null | null | null | null | unspecified | success | null | null | 5 mol % catalyst loading; yields ranged from 51-92%. | null | CC(C)(C)OC(=O)n1cccc1O[Si](C)(C)C |
27,960,274 | 27960274 | Hoveyda reinvestigated the three-component Mannich reaction of cyclohexylcarboxaldehyde (R = Cy) with o-thiomethyl-p-anisidine and N-Boc-2-(trimethylsiloxy)pyrrole in the presence of 5 mol % of iso-leucine-derived phosphine ligand 27 and 5 mol % of AgOAc, which led to the corresponding Mannich product in 82% yield. | Mannich reaction | cyclohexylcarboxaldehyde, o-thiomethyl-p-anisidine, N-Boc-2-(trimethylsiloxy)pyrrole | Mannich product | AgOAc | iso-leucine-derived phosphine ligand 27 | null | 82 | unspecified | success | null | null | 5 mol % ligand 27 and 5 mol % AgOAc. | null | O=CC1CCCCC1 |
27,960,274 | 27960274 | Shi et al. used chiral phosphine Schiff base type ligands (11 mol %) and AgOAc (10 mol %) to promote the enantioselective Mannich reaction of aromatic N-aryl aldimines 40a–40h with trimethylsiloxyfuran 18a, producing chiral Mannich products 42a–42h with yields of 51–91%. | Mannich reaction | aromatic N-aryl aldimines 40a–40h, trimethylsiloxyfuran 18a | chiral Mannich products 42a–42h | AgOAc | chiral phosphine Schiff base type ligands | null | null | unspecified | success | null | null | 11 mol % ligand and 10 mol % AgOAc; yields ranged from 51-91%. | null | C[Si](C)(C)Oc1ccco1 |
27,960,274 | 27960274 | It was found that the use of benzyl alcohol as superstoichiometric additive was important to achieve better yield and diastereoselectivity as well as enantioselectivity in the reaction of aromatic N-aryl aldimines 40a–40h with trimethylsiloxyfuran 18a using ligand 41 and AgOAc. | Mannich reaction | aromatic N-aryl aldimines 40a–40h, trimethylsiloxyfuran 18a | chiral Mannich products 42a–42h | AgOAc, benzyl alcohol | ligand 41 | null | null | unspecified | success | null | null | Benzyl alcohol used as superstoichiometric additive. | null | C[Si](C)(C)Oc1ccco1 |
22,000,119 | 22000119 | Compound 16, 4-(Pyridin-3-yl)-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline, was synthesized using 6b (0.12 g, 0.50 mmol), dry ammonium acetate (0.38 g, 5.00 mmol), 2c (0.16 g, 0.50 mmol), and dry methanol (2.5 mL) at 100 °C for 12 h to yield 58 mg (34.5%) as a white solid. | null | 6b, 2c | 4-(Pyridin-3-yl)-2-(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 34.5 | isolated | success | 100 °C | 12 h | 58 mg isolated; 0.12 g of 6b, 0.38 g of ammonium acetate, 0.16 g of 2c, 2.5 mL of methanol | null | c1cncc(-c2cc(-c3ccncc3)nc3c2CCc2cccnc2-3)c1 |
24,090,404 | 24090404 | N-(1-(2,6-Dibutylphenyl)ethyl)picolinamide was synthesized by charging a 2-dram screw-cap vial with Pd(OAc)₂ (10 mol%), CuBr₂ (20 mol %), N-(1-phenylethyl)picolinamide (1 mmol), n-butyl iodide (4 mmol), K₂CO₃ (4 mmol), and water (0.30 mL), then stirring at 120 °C for 24 h. | alkylation | N-(1-phenylethyl)picolinamide, n-butyl iodide | N-(1-(2,6-Dibutylphenyl)ethyl)picolinamide | K₂CO₃ | Pd(OAc)₂, CuBr₂ | water | 99 | isolated | success | 120 °C | 24 h | 2-dram screw-cap vial | null | CCCCc1cccc(CCCC)c1C(C)NC(=O)c1ccccn1 |
22,000,119 | 22000119 | The procedure described at Section 4.5 was employed with 7b (0.07 g, 0.29 mmol), dry ammonium acetate (0.22 g, 2.90 mmol), 2c (0.09 g, 0.29 mmol), and glacial acetic acid (0.5 mL) at 90 °C for 14 h to yield 32 mg (0.09 mmol, 31.7%) of 4-(Pyridin-3-yl)-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (32) as a light y... | null | 7b, 2c | 4-(Pyridin-3-yl)-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate, glacial acetic acid | null | glacial acetic acid | 31.7 | isolated | success | 90 °C | 14 h | 32 mg of product isolated | null | c1cncc(-c2cc(-c3ccncc3)nc3c2CCc2sccc2-3)c1 |
10,814,067 | 10814067 | The general procedure using workup method B gave 211 mg (94%) of N-(4-Acetylphenyl)-m-toluidine as a yellow solid. | null | null | N-(4-Acetylphenyl)-m-toluidine | null | null | null | 94 | isolated | success | null | null | 211 mg isolated; used workup method B; prepared via general procedure | null | CC(=O)c1ccc(Nc2cccc(C)c2)cc1 |
32,637,839 | 32637839 | Diethyl aminomalonate hydrochloride S1 (3.62 g, 17.1 mmol) was reacted with benzophenoneimine (3.13 g, 17.1 mmol) in dichloromethane (60 mL) at room temperature for 24 h to give 2-aminomalonate 5a (4.67 g, 80%). | condensation | diethyl aminomalonate hydrochloride, benzophenoneimine | 2-aminomalonate 5a | null | null | dichloromethane | 80 | isolated | success | room temperature | 24 h | Argon atmosphere; purified by column chromatography on silica gel (hexane/EtOAc = 10:1). | null | NC(C(=O)[O-])C(=O)[O-] |
32,637,839 | 32637839 | Crude 2-aminomalonate (prepared from diethyl aminomalonate hydrochloride S1 and saturated aqueous NaHCO3) was reacted with (MeO)2CNMe2 (4.64 mg, 39.0 mmol) in toluene (60 mL) under reflux for 30 min and then at room temperature for 12 h to give diethyl 2-aminomalonate 5b (6.23 g, 90%). | condensation | 2-aminomalonate, (MeO)2CNMe2 | diethyl 2-aminomalonate 5b | null | null | toluene | 90 | isolated | success | reflux | 12.5 h | Argon atmosphere; reaction stirred under reflux for 30 min and then at room temperature for 12 h. | null | CCOC(=O)C(/N=C/N(C)C)C(=O)OCC |
32,637,839 | 32637839 | Substrates 3, which are 3-amino-4-(2-bromophenyl)-2-pyridones, could be obtained by the conjugate addition of diethyl 2-aminomalonate 5 to alkynyl imines 4 with a bromo group. | conjugate addition | diethyl 2-aminomalonate, alkynyl imines 4 | 3-amino-4-(2-bromophenyl)-2-pyridones 3 | null | null | null | null | null | success | null | null | null | null | Nc1ccc[nH]c1=O |
32,637,839 | 32637839 | 2,3-disubstituted 4-ethoxycarbonyl-β-carbolin-1-ones 1 could be obtained by the intramolecular amination of 3-amino-4-(2-bromophenyl)-2-pyridones 2. | intramolecular amination | 3-amino-4-(2-bromophenyl)-2-pyridones 2 | 2,3-disubstituted 4-ethoxycarbonyl-β-carbolin-1-ones 1 | null | palladium | null | null | null | success | null | null | The synthesis uses palladium-catalyzed intramolecular amination as described in the abstract. | null | O=C1N=CC=C2C1=Nc1ccccc12 |
31,626,546 | 31626546 | Hydroxycarbonimidic dibromide (4, 8.15 g, 40.2 mmol) was dissolved in CH₂Cl₂ (100 mL), and 2-bromo-3,3,3-trifluoro-1-propene (2, 21.1 g, 121 mmol) and NaHCO₃ (11.1 g, 133 mmol) were added to the vigorously stirred homogeneous solution at rt. The resulting mixture was stirred overnight, yielding 3,5-Dibromo-5-(trifluoro... | cycloaddition | hydroxycarbonimidic dibromide, 2-bromo-3,3,3-trifluoro-1-propene | 3,5-Dibromo-5-(trifluoromethyl)-4,5-dihydroisoxazole | NaHCO₃ | null | CH₂Cl₂ | 63 | isolated | success | rt | overnight | vigorously stirred homogeneous solution; purified by distillation in vacuo | null | FC(F)(F)C1(Br)CC(Br)=NO1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed using 6c (0.08 g, 0.35 mmol), dry ammonium acetate (0.27 g, 3.50 mmol), 2c (0.11 g, 0.35 mmol), and dry methanol (2.5 mL) at 95 °C for 14 h to yield 66 mg (56.1%) of 2,4-Di(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline (20) as a white solid. | null | 6c, 2c | 2,4-Di(pyridin-4-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 56.1 | isolated | success | 95 °C | 14 h | 66 mg isolated; dry ammonium acetate and dry methanol used. | null | c1cnc2c(c1)CCc1c(-c3ccncc3)cc(-c3ccncc3)nc1-2 |
22,000,119 | 22000119 | A procedure was employed using 7a (0.14 g, 0.60 mmol), dry ammonium acetate (0.46 g, 6.00 mmol), 2c (0.19 g, 0.60 mmol), and glacial acetic acid (1.0 mL) at 100 °C for 20 h to yield 87 mg (42.5%) of 4-(Pyridin-2-yl)-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline (28) as a light yellow solid. | null | 7a, 2c | 4-(Pyridin-2-yl)-2-(pyridin-4-yl)-5,6-dihydrothieno[2,3-h]quinoline | ammonium acetate | null | glacial acetic acid | 42.5 | isolated | success | 100 °C | 20 h | 87 mg isolated | null | c1ccc(-c2cc(-c3ccncc3)nc3c2CCc2sccc2-3)nc1 |
32,637,839 | 32637839 | Nitrone S3f(28), CuI, DPPE, and K2CO3 in DMF and H2O were reacted with 1-bromo-2-ethynylbenzene S2a at 80 °C for 4 h to give alkynyl imine 4f (834 mg, 70%). | coupling | nitrone S3f(28), 1-bromo-2-ethynylbenzene S2a | (Z)-3-(2-Bromophenyl)-N-(4-chlorophenyl)-1-phenylprop-2-yn-1-imine (4f) | K2CO3, DPPE | CuI | DMF, H2O | 70 | isolated | success | 80 °C | 4 h | Reaction performed in a 30 mL two-neck round-bottom flask under an argon balloon. | null | Clc1ccc(/N=C(\C#Cc2ccccc2Br)c2ccccc2)cc1 |
32,637,839 | 32637839 | Aldehyde S5g and nitroarene S4g were stirred in H2O, EtOH, and NH4Cl at room temperature for 15 min, followed by the addition of Zn powder at 0 °C and stirring at room temperature for 15 h to give nitrone S3g (870 mg, 41%). | nitrone synthesis | aldehyde S5g, nitroarene S4g | (Z)-N-Phenyl-1-(p-tolyl)methanimine Oxide (S3g) | NH4Cl, Zn powder | null | H2O, EtOH | 41 | isolated | success | rt | 15 h | Reaction performed in a 300 mL two-neck round-bottom flask under an argon balloon; Zn powder added at 0 °C. | null | Cc1ccc(/C=[N+](\[O-])c2ccccc2)cc1 |
22,000,119 | 22000119 | The procedure described at Section 4.4 was employed with 6b (0.07 g, 0.30 mmol), dry ammonium acetate (0.23 g, 3.00 mmol), 2b (0.10 g, 0.30 mmol), and dry methanol (2.0 mL) at 100 °C for 12 h to yield 58 mg (0.17 mmol, 57.5%) of 2,4-Di(Pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline (15) as a white solid. | null | 6b, 2b | 2,4-Di(Pyridin-3-yl)-5,6-dihydro-1,10-phenanthroline | ammonium acetate | null | methanol | 57.5 | isolated | success | 100 °C | 12 h | 58 mg isolated; white solid | null | c1cncc(-c2cc(-c3cccnc3)c3c(n2)-c2ncccc2CC3)c1 |
11,848,747 | 11848747 | The (Z)-propenyl ether (Z)-V reacts to give a quaternary mixture of nitroso acetals in 83% yield. | cycloaddition | (Z)-V | nitroso acetals | null | null | null | 83 | unspecified | success | null | null | null | The product is described as a quaternary mixture. | C/C=C\O/C=C\C |
11,848,747 | 11848747 | With MAPh as the Lewis acid, the lactams formed after hydrogenation are now enriched in the exo diastereomer a. | cycloaddition | (Z)-VI | lactams | null | MAPh | null | null | unspecified | success | null | null | Lactams formed after hydrogenation. | The reaction produces an enrichment in the exo diastereomer a. | [CH3][Al]([O]c1c(-c2ccccc2)cccc1-c1ccccc1)[O]c1c(-c2ccccc2)cccc1-c1ccccc1 |
11,848,747 | 11848747 | The full evaluation of 2,2-diphenylcyclopentanol as an auxiliary is seen in the examination of (E)-propenyl ether (E)-VI in the test cycloaddition with both Lewis acids... With MAPh as the promoter, the nitroso acetals are formed in 83% yield. | cycloaddition | (E)-VI | nitroso acetals | null | MAPh | null | 83 | unspecified | success | null | null | Product formed as a mixture of two diastereomers in a ratio of 7/1. | null | [CH3][Al]([O]c1c(-c2ccccc2)cccc1-c1ccccc1)[O]c1c(-c2ccccc2)cccc1-c1ccccc1 |
32,637,839 | 32637839 | 3-amino-2-pyridone 2a (48.9 mg, 0.100 mmol) in degassed 1,4-dioxane (2 mL) was reacted with Pd2(dba)3 (2.3 mg, 0.0025 mmol), SPhos (3.1 mg, 0.0075 mmol), and NaOtBu (19.2 mg, 0.200 mmol) under reflux for 4 h to give β-carbolin-1-one 1a (33.1 mg, 83%). | intramolecular amination | 3-amino-2-pyridone 2a | Ethyl 1-Oxo-2,3-diphenyl-2,9-dihydro-1H-pyrido[3,4-b]indole-4-carboxylate | NaOtBu, SPhos | Pd2(dba)3 | 1,4-dioxane | 83 | isolated | success | reflux | 4 h | argon balloon, degassed solvent | null | CCOC(=O)c1c(-c2ccccc2)n(-c2ccccc2)c(=O)c2[nH]c3ccccc3c12 |
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