Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[C:7]([S:10]([NH2:13])(=[O:12])=[O:11])[CH:8]=2)[CH:3]=[CH:2]1.[Cl:14][C:15]1[CH:20]=[CH:19][C:18]([N:21]=[C:22]=[O:23])=[CH:17][CH:16]=1>>[Cl:14][C:15]1[CH:20]=[CH:19][C:18]([NH:21][C:22]([NH:13][S:10]([C:7]2[CH:8]=[C:9]3[C:4]([CH:3]=[CH:2][NH:1]3)=[CH:5][CH:6]=2)(=[O:11])=[O:12])=[O:23])=[CH:17][CH:16]=1
Reactant: NS(=O)(=O)c1ccc2cc[nH]c2c1
Reactant: O=C=Nc1ccc(Cl)cc1
Product: O=C(Nc1ccc(Cl)cc1)NS(=O)(=O)c1ccc2cc[nH]c2c1
Yield: 51.6 %

Procedure:
To a solution of 4-chloro-3-nitrophenylsulfonamide (12 g, 51 mmol) dissolved in 50 ml of anhydrous dimethylformamide, was added 13.1 g (116 mmol) of ethylcyanoacetate and 10.5 g (76 mmol) of anhydrous potassium carbonate. This mixture was heated at 110° C. for 3 hours, cooled to room temperature, and added to ice water containing 8 ml of concentrated sulfuric acid. The mixture was extracted with ethyl acetate (3×200 ml), and the combined organic layer was back extracted with 200 ml of water. The organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. Purification by a preparative high pressure liquid chromatogram (Waters Prep 500 A) with 55% ethyl acetate in hexanes on a silica gel cartridge. The product was added to 45 ml of 50% aqueous acetic acid containing 3 ml of concentrated sulfuric acid and refluxed for 12 hours. The reaction was cooled to room temperature and added to 400 ml water. This mixture was extracted with ethyl acetate (3×100 ml). The combined organic layer was dried with anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was crystallized from 40 ml of ethyl acetate, 3 ml of ethanol and 1 ml of hexanes to obtain 6.9 g of 3-nitro-4-(2-acetonitrile)phenyl sulfonamide. This material was dissolved in 40 ml of ethanol containing 3 g of 5% palladium on activated carbon. This mixture was placed in a Parr Hydrogenation apparatus with 60 p.s.i. of hydrogen at 40° C. for 3 hours. This mixture was filtered, the filtrate concentrated under vacuum, and the residue recrystallized from 20 ml of ethyl acetate and 10 ml of ethanol to obtain 2.4 g of 6-indolesulfonamide. The sulfonamide (6.1 mmol) was reacted with 4-chlorophenylisocyanate (6.1 mmol) as described in Preparation 2 supra to obtain 1.1 g of the title product as a solid.
Reaction SMILES: [N:1]1([C:11]([C:13]2[CH:17]=[C:16]([CH:18]3[CH2:23][CH2:22][NH:21][CH2:20][CH2:19]3)[S:15][CH:14]=2)=[O:12])[C@@H:10]2[C@@H:5]([CH2:6][CH2:7][CH2:8][CH2:9]2)[CH2:4][CH2:3][CH2:2]1.C(N(CC)CC)C.[C:31](Cl)(=[O:33])[CH3:32]>C(Cl)Cl>[N:1]1([C:11]([C:13]2[CH:17]=[C:16]([CH:18]3[CH2:19][CH2:20][N:21]([C:31](=[O:33])[CH3:32])[CH2:22][CH2:23]3)[S:15][CH:14]=2)=[O:12])[C@@H:10]2[C@@H:5]([CH2:6][CH2:7][CH2:8][CH2:9]2)[CH2:4][CH2:3][CH2:2]1
Reactant: O=C(c1csc(C2CCNCC2)c1)N1CCC[C@@H]2CCCC[C@@H]21
Reactant: CC(=O)Cl
Solvent: CCN(CC)CC
Solvent: ClCCl
Product: CC(=O)N1CCC(c2cc(C(=O)N3CCC[C@@H]4CCCC[C@@H]43)cs2)CC1
Reaction time: 1 h
Yield: 66.7 %

Procedure:
To a solution of cis-(octahydro-quinolin-1-yl)-(5-piperidin-4-yl-thiophen-3-yl)-methanone (CC-033) (0.026 g, 0.08 mmol) in DCM (1 mL) was added triethylamine (0.27 mmol) and acetyl chloride (0.11 mmol). The reaction mixture was stirred for 1 hour, and then the solvent evaporated. The product was purified by HPLC, eluting with 10%-98% acetonitrile in water (0.1% formic acid). The fractions containing the desired product were concentrated under vacuum to give the title compound as a colourless oil (0.02 g). LCMS m/z 375.15 [M+H]+RT=9.73 min (Analytical Method 2). 1H NMR (400 MHz, CHCl3-d): δ 7.3 (s, 1H), 6.9 (s, 1H), 4.7 (m, 2H), 3.90-3.7 (m, 2H), 3.2-3.10 (m, 3H), 2.9-2.6 (m, 2H), 2.2 (s, 3H), 2.1-1.1 (m, 16H).
Reaction SMILES: [F:1][C:2]1[CH:35]=[CH:34][C:5]([C:6]([NH:8][C:9]2[C:10]([CH3:33])=[C:11]([C:15]3[C:27]4[C:26]5[C:21](=[CH:22][C:23]([CH:28]=O)=[CH:24][CH:25]=5)[NH:20][C:19]=4[C:18]([C:30]([NH2:32])=[O:31])=[CH:17][CH:16]=3)[CH:12]=[CH:13][CH:14]=2)=[O:7])=[CH:4][CH:3]=1.[NH:36]1[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C1COCC1.O>[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:6]([NH:8][C:9]2[C:10]([CH3:33])=[C:11]([C:15]3[C:27]4[C:26]5[C:21](=[CH:22][C:23]([CH2:28][N:36]6[CH2:41][CH2:40][CH2:39][CH2:38][CH2:37]6)=[CH:24][CH:25]=5)[NH:20][C:19]=4[C:18]([C:30]([NH2:32])=[O:31])=[CH:17][CH:16]=3)[CH:12]=[CH:13][CH:14]=2)=[O:7])=[CH:34][CH:35]=1
Reactant: Cc1c(NC(=O)c2ccc(F)cc2)cccc1-c1ccc(C(N)=O)c2[nH]c3cc(C=O)ccc3c12
Reactant: C1CCNCC1
Agent: CC(=O)O[BH-](OC(C)=O)OC(C)=O
Agent: [Na+]
Solvent: C1CCOC1
Solvent: O
Product: Cc1c(NC(=O)c2ccc(F)cc2)cccc1-c1ccc(C(N)=O)c2[nH]c3cc(CN4CCCCC4)ccc3c12
Temperature: 25 °C
Reaction time: 3.5 h
Yield: 40.9 %

Procedure:
Step 2 A suspension of 4-(3-(4-fluorobenzamido)-2-methylphenyl)-7-formyl-9H-carbazole-1-carboxamide (30 mg, 0.064 mmol) in THF (3 mL) was treated with piperidine (16.46 mg, 0.193 mmol) and sodium triacetoxyborohydride (34.1 mg, 0.161 mmol). The mixture was stirred at rt for 3.5 h, the was treated again with additional piperidine (16.5 mg, 0.193 mmol) and sodium triacetoxyborohydride (20 mg). After stirring overnight, the mixture was diluted with water and extracted with EtOAc. The organic phase was washed with brine, dried and concentrated. The residue was purified by preparative HPLC to provide 4-(3-(4-fluorobenzamido)-2-methylphenyl)-7-(piperidin-1-ylmethyl)-9H-carbazole-1-carboxamide (14 mg, 39%). 1H NMR (400 MHz, methanol-d4) δ 8.06 (2H, dd, J=8.7, 5.4 Hz), 7.98 (1H, d, J=7.8 Hz), 7.63 (1H, s), 7.52 (1H, d, J=7.3 Hz), 7.44 (1H, t, J=7.8 Hz), 7.18-7.31 (3H, m), 7.07 (2H, d, J=7.5 Hz), 6.96-7.02 (1H, m), 3.96 (2H, s), 2.72-2.88 (4H, m), 1.99 (3H, s), 1.63-1.75 (4H, m), 1.48-1.60 (2H, m). Mass spectrum m/z 535.2 (M+H)+.
Reaction SMILES: [CH2:1]([O:3][C:4]([C:6]1[N:11]=[CH:10][C:9]2[N:12]=[C:13]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)[S:14][C:8]=2[C:7]=1[OH:21])=[O:5])[CH3:2].[Br:22]N1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>[CH2:1]([O:3][C:4]([C:6]1[N:11]=[C:10]([Br:22])[C:9]2[N:12]=[C:13]([C:15]3[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=3)[S:14][C:8]=2[C:7]=1[OH:21])=[O:5])[CH3:2]
Reactant: O=C1CCC(=O)N1Br
Reactant: CCOC(=O)c1ncc2nc(-c3ccccc3)sc2c1O
Agent: O=C(OOC(=O)c1ccccc1)c1ccccc1
Solvent: ClC(Cl)(Cl)Cl
Product: CCOC(=O)c1nc(Br)c2nc(-c3ccccc3)sc2c1O
Temperature: 25 °C
Yield: 71.3 %

Procedure:
A mixture of 7-hydroxy-2-phenyl-thiazolo[4,5-c]pyridine-6-carboxylic acid ethyl ester (81 mg, 0.27 mmol), N-bromosuccinimide (50 mg, 0.30 mmol) and benzoyl peroxide (3.2 mg, 0.01 mmol) in carbon tetrachloride (2 mL) was refluxed for 4 h before it was cooled to room temperature and partitioned between dichloromethane and water. The organic layer was washed with saturated aqueous sodium bicarbonate solution, brine, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel with a gradient of ethyl acetate and dichloromethane to give the title compound as a white solid (73 mg): MS: (+) m/z 376.9, 378.9 (M+1, 79Br/81Br), MS: (−) m/z 377.1, 379.1 (M−1, 79Br/81Br)
Reaction SMILES: [Cl:1]/[C:2](/[CH3:7])=[CH:3]\[C:4](Cl)=[O:5].[NH2:8][C:9]1[CH:10]=[C:11]([C:15](=[O:19])[CH2:16][CH2:17][CH3:18])[CH:12]=[CH:13][CH:14]=1.C(N(CC)CC)C>O1CCCC1>[C:15]([C:11]1[CH:10]=[C:9]([CH:14]=[CH:13][CH:12]=1)[NH:8][C:4](=[O:5])/[CH:3]=[C:2](\[Cl:1])/[CH3:7])(=[O:19])[CH2:16][CH2:17][CH3:18]
Reactant: CCCC(=O)c1cccc(N)c1
Reactant: C/C(Cl)=C/C(=O)Cl
Solvent: CCN(CC)CC
Solvent: C1CCOC1
Product: CCCC(=O)c1cccc(NC(=O)/C=C(/C)Cl)c1
Temperature: 20 °C
Reaction time: 16 h
Yield: 49.5 %

Procedure:
29.2 g of β-chlorocrotonyl chloride were added over one hour at 0° C to a mixture of 31 g of m-amino-butyrophenone 21.2 g of triethylamine and 300 ml of tetrahydrofuran and after stirring for 16 hours at 20° C, the mixture was vacuum filtered. The filtrate was concentrated to dryness and the residue was chromatographed over silica gel to obtain 25 g of m-butyryl-3-chlorocrotonanilide melting at 106° C.
Reaction SMILES: [Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([O:9][CH:10]([CH3:12])[CH3:11])=[CH:4][C:3]=1[NH:13][NH2:14].[F:15][CH:16]([F:25])[C:17]([NH:19][C:20](=O)[O:21]CC)=O.O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O>C1(C)C(C)=CC=CC=1>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([O:9][CH:10]([CH3:12])[CH3:11])=[CH:4][C:3]=1[N:13]1[C:20](=[O:21])[NH:19][C:17]([CH:16]([F:25])[F:15])=[N:14]1
Reactant: CC(C)Oc1cc(NN)c(Cl)cc1Cl
Reactant: CCOC(=O)NC(=O)C(F)F
Agent: O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3
Solvent: Cc1ccccc1C
Product: CC(C)Oc1cc(-n2nc(C(F)F)[nH]c2=O)c(Cl)cc1Cl
Temperature: 25 °C
Yield: 48.5 %

Procedure:
To a stirred solution of 11.8 g (0.05 mole) of 2,4-dichloro-5-(1-methylethoxy)phenylhydrazine and 10.0 g (0.06 mole) of ethyl difluoroacetylcarbamate in 130 mL of xylene was added 2.5 g (0.02 mole) of phosphorus pentoxide. After complete addition the mixture was heated at reflux for 1.5 hours then allowed to cool to room temperature for approximately 18 hours. The reaction mixture was decanted from a dark residue in the reaction flask and washed with water. The washed mixture was extracted with a 10% aqueous sodium hydroxide solution. The basic extract was made acidic with concentrated hydrochloric acid to form an oily precipitate. This aqueous phase was decanted from the oily residue and fresh water added to wash the residue. This residue was dissolved in 160 mL of methylene chloride and filtered through a celite pad. The filtrate was dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated under reduced pressure to leave a semi-solid residue. The residue was triturated with approximately 125 mL of petroleum ether to provide 8.2 g of 1-[2,4-dichloro-5-(1-methylethoxy)phenyl]-3-difluoromethyl-4,5-dihydro-1,2,4-triazol-5(1H)-one.
Reaction SMILES: [OH-].[K+].[CH3:3][C@@:4]12[C:20](=[O:21])[CH2:19][CH2:18][C@H:17]1[C@H:16]1[C@@H:7]([C:8]3[CH:9]=[CH:10][C:11]([OH:22])=[CH:12][C:13]=3[CH2:14][CH2:15]1)[CH2:6][CH2:5]2.[CH:23](=O)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(O)(=O)C>CO>[CH:23](=[C:19]1[C:20](=[O:21])[C:4]2([CH3:3])[CH:17]([CH:16]3[CH:7]([CH2:6][CH2:5]2)[C:8]2[CH:9]=[CH:10][C:11]([OH:22])=[CH:12][C:13]=2[CH2:14][CH2:15]3)[CH2:18]1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1
Reactant: C[C@]12CC[C@@H]3c4ccc(O)cc4CC[C@H]3[C@@H]1CCC2=O
Reactant: O=Cc1ccccc1
Agent: [K+]
Agent: [OH-]
Solvent: CC(=O)O
Solvent: CO
Product: CC12CCC3c4ccc(O)cc4CCC3C1CC(=Cc1ccccc1)C2=O
Reaction time: 4 h

Procedure:
Potassium hydroxide (1.0 g) was added to a solution of estrone (1.350 g, 5.0 mmol) and benzaldehyde (1.0 g, 9.4 mmol) in methanol (50 ml) at room temperature. The resulting orange solution was stirred at this temperature for 4 h. Then glacial acetic acid (ca. 5 ml) was added with stirring. The colour changed to light yellow and a white solid precipitated. The solid was filtered off and washed with water (50 ml), methanol (20 ml), diethyl ether (50 ml) and hexane and dried under high vacuum. Yield 1.578 g (88%). H-NMR (CDCl3, 400 MHz), δ: 1.00 (s, 3H), 1.40-1.77 (m, 5H), 2.04-2.12 (m, 2H), 2.26-2.34 (m, 1H), 2.38-2.45 (m, 1H), 2.50-2.60 (m, 1H) 2.86-3.03 (m, 3H), 4.76 (s, 1H, —OH), 6.60 (d, J=2.3 Hz, 1H), 6.66 (dd, J=8.2, 2.3 Hz, 1H), 7.17 (d, J=8.2 Hz, 1H), 7.34-7.45 (m, 3H), 7.48 (s, 1H), 7.54-7.59 (m, 2H). LRMS (FAB+): 359.2 (100, [M+H]+). LRMS (FAB−): 357.2 (100, [M−H]−). HRMS (FAB+) 359.202332 C25H27O2 requires 359.201105
Reaction SMILES: C[C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][OH:10])=[CH:4][C:3]=1[CH:11]=[CH:12][CH2:13][CH2:14][CH3:15].BrC1C=C(CCO)C=C[C:22]=1[O:23]C.BrC1C=C(CCO)C=CC=1C>>[O:23]([C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][OH:10])=[CH:4][C:3]=1[CH:11]=[CH:12][CH2:13][CH2:14][CH3:15])[CH3:22]
Reactant: COc1ccc(CCO)cc1Br
Reactant: CCCC=Cc1cc(CCO)ccc1C
Agent: Cc1ccc(CCO)cc1Br
Product: CCCC=Cc1cc(CCO)ccc1OC

Procedure:
By working as described for preparation 1c), but using compound 2b) from the previous step instead of compound 1b), the title compound is obtained.
Reaction SMILES: [CH3:1][C:2]([CH3:4])=O.[CH3:5][O:6][C:7]1[CH:12]=[C:11]([O:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([C:20]([F:23])([F:22])[F:21])[CH:15]=2)[N:10]=[C:9]([C:24]([NH:26][NH2:27])=[O:25])[CH:8]=1>>[C:2](=[N:27][NH:26][C:24](=[O:25])[C:9]1[CH:8]=[C:7]([O:6][CH3:5])[CH:12]=[C:11]([O:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([C:20]([F:21])([F:22])[F:23])[CH:15]=2)[N:10]=1)([CH3:4])[CH3:1]
Reactant: CC(C)=O
Reactant: COc1cc(Oc2cccc(C(F)(F)F)c2)nc(C(=O)NN)c1
Product: COc1cc(Oc2cccc(C(F)(F)F)c2)nc(C(=O)NN=C(C)C)c1

Procedure:
Acetone (10 ml, 0.0015×91 mol) was added to 4-methoxy-6-[3-(trifluoromethyl)phenoxy] picolinic acid hydrazide (0.5 g, 0.0015 mol). The resultant mixture was stirred at room temperature for about one hours. The obtained reaction solution was concentrated, thereby obtaining an aimed product.
Reaction SMILES: [F:1][C:2]([F:14])([F:13])[C:3]([C:5]1[CH:10]=[CH:9][C:8]([O:11][CH3:12])=[CH:7][CH:6]=1)=O.[Cl-].[OH:16][NH3+:17].C([O-])(=O)C.[Na+]>C(O)C.O>[F:1][C:2]([F:14])([F:13])[C:3]([C:5]1[CH:10]=[CH:9][C:8]([O:11][CH3:12])=[CH:7][CH:6]=1)=[N:17][OH:16]
Reactant: [NH3+]O
Reactant: COc1ccc(C(=O)C(F)(F)F)cc1
Agent: CC(=O)[O-]
Agent: [Cl-]
Agent: [Na+]
Solvent: CCO
Solvent: O
Product: COc1ccc(C(=NO)C(F)(F)F)cc1
Temperature: 0 °C
Yield: 75.2 %

Procedure:
37.2 g (0.182 mol) of 2,2,2-trifluoro-1-(4-methoxyphenyl)-ethanone are dissolved in 150 ml of ethanol at 80° C. To the solution are added dropwise 13.3 g (0.191 mol) of hydroxylammonium chloride and 25.4 g (0.309 mol) of sodium acetate dissolved in 75 ml of water. The reaction mixture is refluxed for 4 hours. The mixture is poured into ice water, the precipitate is filtered, yielding 30.0 g of 2,2,2-trifluoro-1-(4-methoxyphenyl)-ethanone oxime as a pale yellow solid. The crude product is used in the next reaction step without further purification.
Reaction SMILES: [CH3:1][C:2]1[C:15](=[O:16])[N:14]=[C:13]2[N:4]([C@@H:5]3[O:9][C@H:8]([CH2:10][OH:11])[C@@H:7]([O:12]2)[CH2:6]3)[CH:3]=1.[N-:17]=[N+:18]=[N-:19].[Na+]>CN(C=O)C.O>[N:17]([C@@H:7]1[C@@H:8]([CH2:10][OH:11])[O:9][C@@H:5]([N:4]2[CH:3]=[C:2]([CH3:1])[C:15](=[O:16])[NH:14][C:13]2=[O:12])[CH2:6]1)=[N+:18]=[N-:19]
Reactant: Cc1cn2c(nc1=O)O[C@H]1C[C@H]2O[C@@H]1CO
Reactant: [N-]=[N+]=[N-]
Agent: [Na+]
Solvent: O
Solvent: CN(C)C=O
Product: Cc1cn([C@H]2C[C@H](N=[N+]=[N-])[C@@H](CO)O2)c(=O)[nH]c1=O

Procedure:
2,3'-Anhydrothymidine (25 O: 0.1115 mol) and NaN3 (29 g, 0.446 mol) was suspended in a mixture of 250 ml DMF and 38 ml H2O. The reaction was refluxed for 5 hours at which time it was poured into 1 liter of H2O. The aqueous solution was extracted with EtOAc (3×700 ml). The EtOAc was dried over Na2SO4, filtered and the EtOAoac was removed in vacuo to yield a viscous oil. This oil was stirred with 200 ml water resulting in a solid 9.15 g (0.0342 mol, 30.7%). mp=116°-118° C.
Reaction SMILES: CC(C)=[O:3].OS(O)(=O)=O.O=[Cr](=O)=O.[CH3:14][C:15]([C@@H:18]1[C@:35]2([CH3:36])[C@H:21]([C@H:22]3[C@H:32]([CH2:33][CH2:34]2)[C@:30]2([CH3:31])[C:25]([CH2:26][C@@H:27]([OH:37])[CH2:28][CH2:29]2)=[CH:24][CH2:23]3)[CH2:20][CH2:19]1)=[CH:16][CH3:17]>CC(C)=O>[CH3:14][C:15]([C@@H:18]1[C@:35]2([CH3:36])[C@H:21]([C@H:22]3[C@H:32]([CH2:33][CH2:34]2)[C@:30]2([CH3:31])[C:25](=[CH:26][C:27](=[O:37])[CH2:28][CH2:29]2)[C:24](=[O:3])[CH2:23]3)[CH2:20][CH2:19]1)=[CH:16][CH3:17]
Reactant: CC=C(C)[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C
Reactant: CC(C)=O
Agent: O=[Cr](=O)=O
Agent: O=S(=O)(O)O
Product: CC=C(C)[C@H]1CC[C@H]2[C@@H]3CC(=O)C4=CC(=O)CC[C@]4(C)[C@H]3CC[C@]12C
Reaction time: 0.75 h
Yield: 29 %

Procedure:
Jones reagent (2.67 M, 2.0 ml. 5.3 mmol) was added to a solution of 20,21-dimethylpregna-5,20-dien-3β-ol (6, 460.1 mg, 1.400 mmol) in 50 ml of acetone and the reaction was stirred 45 min. After quenching with 2-propanol (1.0 ml) the mixture was poured into 100 ml of water and extracted three times with 50 ml of ethyl acetate. The combined organic extracts were washed with 50 ml of saturated sodium bicarbonate+50 ml of brine, dried over magnesium sulfate, and filtered through Celite. The residue was washed with 25 ml of ethyl acetate and the combined filtrates were concentrated under reduced pressure. Flash chromatography (25% ethyl acetate/hexanes on silica gel) and recrystallization of the residue from 95% ethanol gave yellow needles (138.2 mg, 0.4059 mmol, 29%), m.p. 172-178° C.
Reaction SMILES: [C:1]([NH:4][C@H:5]([C:10](O)=[O:11])[CH2:6][CH:7]([CH3:9])[CH3:8])(=[O:3])[CH3:2].CN1CCOCC1.ClC(OCC(C)C)=O.[NH:28](Cl)[C@H:29]([C:34]([O:36][CH3:37])=[O:35])[CH2:30][CH:31]([CH3:33])[CH3:32].Cl>C1COCC1>[NH:4]([C:1]([CH3:2])=[O:3])[C@H:5]([C:10]([NH:28][C@H:29]([C:34]([O:36][CH3:37])=[O:35])[CH2:30][CH:31]([CH3:33])[CH3:32])=[O:11])[CH2:6][CH:7]([CH3:8])[CH3:9]
Reactant: CC(=O)N[C@@H](CC(C)C)C(=O)O
Reactant: COC(=O)[C@H](CC(C)C)NCl
Agent: CC(C)COC(=O)Cl
Agent: Cl
Solvent: C1CCOC1
Solvent: CN1CCOCC1
Product: COC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC(C)C)NC(C)=O
Reaction time: 0.33 h

Procedure:
Acetyl-Leucine (5.0 g) was dissolved in 150 mL of distilled THF under argon and the resulting solution was cooled to -15°. Next one equivalent of N-methyl morpholine followed by one equivalent of isobutyl chloroformate was added and the reaction was allowed to activate 20 minutes and then another equivalent of N-methyl morpholine followed by HCl-LeuOMe (5.25 g). The reaction is allowed to slowly come to room temperature and stir overnight. The reaction was then poured into 150 mL of 1N HCl and extracted with ethyl acetate (2×150 mL). The combined organic fractions were washed with 1N HCl (15 mL), brine (50 mL), and dried over MgSO4, filtered and the solvent was removed under reduced pressure and then high vacuum. TLC (silica gel, CHCl3 /isopropanol:95:5) showed the product Ac-Leu-Leu-OCH3 to be a single spot Rf 0.36. NMR (100 MHz) δ 0.95 (d, 12H), 1.5 (bs, 6H), 2.0 (s, 3H), 3.7 (s, 3H), 4.5 (q, 2H), 6.6 (d, 1H), 6.8 (d, 1H).
Reaction SMILES: Cl.[CH3:2][O:3][C:4]1[C:5]([O:27][CH3:28])=[CH:6][C:7]2[C:16]3[CH2:15][CH2:14][N:13]([C:17]4[CH:18]=[C:19]([CH:23]=[CH:24][CH:25]=4)[C:20](O)=[O:21])[CH2:12][C:11]=3[CH:10]=[N:9][C:8]=2[CH:26]=1.C(N(CC)C(C)C)(C)C.CCCP(=O)=O.[CH:44]([C:47]1[CH:48]=[C:49]([CH:51]=[CH:52][CH:53]=1)[NH2:50])([CH3:46])[CH3:45]>CN(C=O)C.CN(C1C=CN=CC=1)C>[CH3:2][O:3][C:4]1[C:5]([O:27][CH3:28])=[CH:6][C:7]2[C:16]3[CH2:15][CH2:14][N:13]([C:17]4[CH:18]=[C:19]([CH:23]=[CH:24][CH:25]=4)[C:20]([NH:50][C:49]4[CH:51]=[CH:52][CH:53]=[C:47]([CH:44]([CH3:46])[CH3:45])[CH:48]=4)=[O:21])[CH2:12][C:11]=3[CH:10]=[N:9][C:8]=2[CH:26]=1
Reactant: COc1cc2ncc3c(c2cc1OC)CCN(c1cccc(C(=O)O)c1)C3
Reactant: CC(C)c1cccc(N)c1
Agent: CCCP(=O)=O
Agent: CN(C)c1ccncc1
Agent: Cl
Solvent: CN(C)C=O
Solvent: CCN(C(C)C)C(C)C
Product: COc1cc2ncc3c(c2cc1OC)CCN(c1cccc(C(=O)Nc2cccc(C(C)C)c2)c1)C3
Reaction time: 0.08 h
Yield: 16.6 %

Procedure:
To a mixture of 3-(8,9-dimethoxy-1,4-dihydrobenzo[c]-2,7-naphthyridin-3(2H)-yl)benzoic acid hydrochloride (0.25 mmol, 100 mg) and N, N-diisopropylethylamine (0.75 mmol, 0.131 mL) in 2.0 mL DMF at rt was added propylphosphonic anhydride solution (50 wt % in EtOAc, 0.325 mmol, 0.193 mL). After 5 min at rt, 3-isopropylaniline (0.375 mmol, 0.053 mL) and catalytic DMAP was added and the reactions continued for 2 hours. Then an additional 0.050 mL propylphosphonic anhydride solution and 0.025 mL 3-isopropylaniline was added and the reaction continued for 19 hours. The reaction was quenched into dilute aqueous Na2CO3 solution, extracted into EtOAc, the EtOAc layer washed with H2O, brine, dried with anhydrous Na2SO4 and rotary evaporated. The resulting oil was chromatographed eluting with CHCl3/EtOAc and then recrystallized from EtOAc/hexane to give the title compound as a white solid (20 mg, 17%).
Reaction SMILES: [C:1]([C:5]1[N:6]=[C:7]([C:10]2[O:11][C:12]3[CH:18]=[CH:17][C:16]([CH2:19][N:20]4[C:28]5[C:23](=[CH:24][C:25]([C:29]([O:31]C)=[O:30])=[CH:26][CH:27]=5)[C:22]([C:33]#[N:34])=[CH:21]4)=[CH:15][C:13]=3[CH:14]=2)[S:8][CH:9]=1)([CH3:4])([CH3:3])[CH3:2].[OH-].[Na+].O.Cl>CO>[C:1]([C:5]1[N:6]=[C:7]([C:10]2[O:11][C:12]3[CH:18]=[CH:17][C:16]([CH2:19][N:20]4[C:28]5[C:23](=[CH:24][C:25]([C:29]([OH:31])=[O:30])=[CH:26][CH:27]=5)[C:22]([C:33]#[N:34])=[CH:21]4)=[CH:15][C:13]=3[CH:14]=2)[S:8][CH:9]=1)([CH3:4])([CH3:2])[CH3:3]
Reactant: COC(=O)c1ccc2c(c1)c(C#N)cn2Cc1ccc2oc(-c3nc(C(C)(C)C)cs3)cc2c1
Agent: Cl
Agent: [Na+]
Agent: [OH-]
Solvent: O
Solvent: CO
Product: CC(C)(C)c1csc(-c2cc3cc(Cn4cc(C#N)c5cc(C(=O)O)ccc54)ccc3o2)n1

Procedure:
A mixture of methyl 1-{[2-(4-tert-butylthiazol-2-yl)benzofuran-5-yl]methyl}-3-cyanoindole-5-carboxylate (1.09 g) and sodium hydroxide (1.5 g) in a mixed solvent of water (15 ml) and methanol (30 ml) was stirred under reflux for 2 hours. After cooling, the mixture was made acidic with diluted hydrochloric acid, and the resulting precipitates were collected by filtration and washed with water to give 1-{[2-(4-tert-butylthiazol-2-yl)benzofuran-5-yl]methyl}-3-cyanoindole-5-carboxylic acid. Borane-methyl sulfide complex (2.0M) in tetrahydrofuran (1.4 ml) was added to a mixture of the acid obtained above in tetrahydrofuran (25 ml) and the mixture was stirred at room temperature for 1 day. After addition of methanol to mixture, the resulting mixture was evaporated under reduced pressure. The residue was partitioned between diluted hydrochloric acid and ethyl acetate. The ethyl acetate layer was washed with water and brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue was subjected to column chromatography on silica gel and eluted with a mixture of toluene and ethyl acetate. The fractions containing the objective compounds were combined and concentrated under reduced pressure to give 1-{[2-(4-tert-butylthiazol-2-yl)benzofuran-5-yl]methyl}-5-(hydroxymethyl)indole-3-carbonitrile (0.87 g).
Reaction SMILES: [F:1][C:2]1([F:13])[O:6][C:5]2[CH:7]=[CH:8][C:9]([CH:11]=O)=[CH:10][C:4]=2[O:3]1.[CH2:14]([NH2:18])[CH2:15][CH2:16][CH3:17]>C(Cl)Cl>[CH2:14]([N:18]=[CH:11][C:9]1[CH:8]=[CH:7][C:5]2[O:6][C:2]([F:13])([F:1])[O:3][C:4]=2[CH:10]=1)[CH2:15][CH2:16][CH3:17]
Reactant: O=Cc1ccc2c(c1)OC(F)(F)O2
Reactant: CCCCN
Solvent: ClCCl
Product: CCCCN=Cc1ccc2c(c1)OC(F)(F)O2
Reaction time: 20 h

Procedure:
0.10 mol of 2,2-difluoro-5-formyl-1,3-benzodioxole are dissolved in 150 ml of methylene chloride, and 0.12 mol of n-butylamine is added at room temperature, with gentle cooling. The mixture is left to stand at room temperature for 20 hours, without stirring, the solvent is distilled off, together with the water which has separated out, under a slight vacuum, a further 150 ml of methylene chloride are added and are distilled off and the oil which remains is dried under an oil pump vacuum. The butylimino compound can be used in the crude form, for example in Example 2.
Reaction SMILES: [CH3:1][NH:2][C:3]1[CH2:7][O:6][C:5](=[O:8])[CH:4]=1.[OH-].[Na+].[Cl:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18]Cl)=[CH:14][N:13]=1>C(COC)OC>[Cl:11][C:12]1[N:13]=[CH:14][C:15]([CH2:18][N:2]([CH3:1])[C:3]2[CH2:7][O:6][C:5](=[O:8])[CH:4]=2)=[CH:16][CH:17]=1
Reactant: ClCc1ccc(Cl)nc1
Reactant: CNC1=CC(=O)OC1
Agent: [Na+]
Agent: [OH-]
Solvent: COCCOC
Product: CN(Cc1ccc(Cl)nc1)C1=CC(=O)OC1
Temperature: 50 °C
Reaction time: 6 h
Yield: 87 %

Procedure:
30 g of 4-(methylamino)furan-2(5H)-one (Example 11) are initially charged in 450 ml of dimethoxyethane at room temperature. Subsequently, 12.6 g of sodium hydroxide are added and, at 40° C., 225 g of a 20% solution of 2-chloro-5-(chloromethyl)pyridine in dimethoxyethane are metered in. The mixture is stirred at 50° C. for a further 6 h. The solvent is substantially removed under reduced pressure and the residue is admixed with 300 ml of water. The solids are filtered off, washed with 150 ml of water and dried under reduced pressure. 58.7 g of 4-([[6-chloropyridin-3-yl]methyl](methy)amino)furan-2(5H)-one are obtained with a purity of 94% (this corresponds to 87% yield).