Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [H-].[Na+].[NH:3]1[CH:7]=[CH:6][N:5]=[CH:4]1.Br[CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11]>C1COCC1.O>[CH2:13]([O:12][C:10](=[O:11])[CH2:9][N:3]1[CH:7]=[CH:6][N:5]=[CH:4]1)[CH3:14]
Reactant: CCOC(=O)CBr
Reactant: c1c[nH]cn1
Agent: [H-]
Agent: [Na+]
Solvent: O
Solvent: C1CCOC1
Product: CCOC(=O)Cn1ccnc1
Temperature: 0 °C
Reaction time: 0.25 h
Yield: 65.4 %

Procedure:
To a 0° C. suspension of NaH (60% in mineral oil, 658 mg, 16.5 mmol) in THF (20 mL) under nitrogen was slowly added a solution of imidazole (1.03 g, 15.1 mmol) in THF (20 mL). The resulting suspension was stirred at 0° C. for 15 minutes, then ethyl bromoacetate (2.2 mL, 20 mmol) was added. The reaction was stirred at room temperature for 4.5 hours, then was diluted with H2O (25 mL). The THF was evaporated under reduced pressure and the remaining aqueous solution was extracted with CH2Cl2 (25 mL×3). The combined organic solution was dried (Na2SO4), filtered and concentrated under reduced pressure. Purification by flash column chromatography on silica (CH2Cl2/MeOH, 19:1) gave the ester as a yellow liquid (1.52 g, 9.87 mmol, 65%). 1H NMR (CDCl3) δ 1.28 (t, 3H, J=7.1 Hz), 4.24 (q, 2H, J=7.1 Hz), 4.68 (s, 2H), 6.95 (s, 1H), 7.09 (s, 1H), 7.50 (s, 1H).
Reaction SMILES: [CH2:1]([O:3][C:4]([C:6]1[CH:11]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[C:10]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[C:9]([CH3:23])[NH:8][C:7]=1[NH2:24])=[O:5])[CH3:2].[CH3:25]C[O-].[Na+].CI>C(O)C>[CH2:1]([O:3][C:4]([C:6]1([CH3:25])[CH:11]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[C:10]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[C:9]([CH3:23])[N:8]=[C:7]1[NH2:24])=[O:5])[CH3:2]
Reactant: CCOC(=O)C1=C(C)NC(N)=C(C(=O)OCC)C1c1ccccc1
Reactant: CC[O-]
Agent: [Na+]
Solvent: CI
Solvent: CCO
Product: CCOC(=O)C1=C(C)N=C(N)C(C)(C(=O)OCC)C1c1ccccc1
Reaction time: 1 h
Yield: 54.1 %

Procedure:
A solution of 33.0 g of 2-amino-6-methyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester and 6.8 g of sodium ethylate in 500 ml of ethanol is brought to the boil and treated with 15 g of methyl iodide. After boiling for a further 60 minutes under reflux, the mixture is concentrated by distillation and the residue is taken up in 300 ml of chloroform and extracted by shaking twice with 100 ml of water. Concentration of the organic phase and recrystallization from ethanol gives 18.6 g (54% of theory) of 2-amino-3,6-dimethyl-4-phenyl-3,4-dihydropyridine-3,5-dicarboxylic acid diethyl ester of melting point 139°C.
Reaction SMILES: [CH:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1B(O)O)=[O:2].Br[C:13]1[O:14][CH:15]=[CH:16][CH:17]=1.C(=O)([O-])[O-].[Na+].[Na+]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(#N)C>[O:14]1[CH:15]=[CH:16][CH:17]=[C:13]1[C:4]1[CH:5]=[CH:6][CH:7]=[CH:8][C:3]=1[CH:1]=[O:2]
Reactant: O=Cc1ccccc1B(O)O
Reactant: Brc1ccco1
Agent: Cl[Pd](Cl)([P](c1ccccc1)(c1ccccc1)c1ccccc1)[P](c1ccccc1)(c1ccccc1)c1ccccc1
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: CC#N
Product: O=Cc1ccccc1-c1ccco1
Temperature: 150 °C
Yield: 35.7 %

Procedure:
A microwave vial (20 ml) was charged with 2-formylphenylboronic acid (298 mg, 2.0 mmol), 2-bromo-furan (350 mg, 2.4 mmol) and 8 ml of acetonitrile. To this mixture was added 4 ml of aqueous sodium carbonate (1M), followed by 100 mg of dichlorobis-(triphenylphosphine)-palladium(II). The reaction vessel was sealed and heated at 150° C. for 5 minutes with microwave irradiation. After cooling, the reaction mixture was extracted with ethylacetate. The organic layer was evaporated to provide a crude material, which was purified by ISCO to give 123 mg of 2-furan-2-yl-benzaldehyde (34% yield).
Reaction SMILES: [CH2:1]([O:8][C:9]1[CH:17]=[CH:16][C:12]([C:13](O)=[O:14])=[C:11]([Cl:18])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.O>O1CCCC1>[CH2:1]([O:8][C:9]1[CH:17]=[CH:16][C:12]([CH2:13][OH:14])=[C:11]([Cl:18])[CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
Reactant: O=C(O)c1ccc(OCc2ccccc2)cc1Cl
Agent: Cl
Solvent: O
Solvent: C1CCOC1
Product: OCc1ccc(OCc2ccccc2)cc1Cl
Temperature: 25 °C
Reaction time: 0.5 h
Yield: 104.3 %

Procedure:
To a solution of 4-benzyloxy-2-chlorobenzoic acid (788 mg) in tetrahydrofuran (7.9 ml) was added dropwise borane-dimethylsulfide complex (10.0M, 0.6 ml) at room temperature under a nitrogen atmosphere and the mixture was refluxed under heating for 2.5 hr. The reaction mixture was allowed to cool to room temperature, and 1N hydrochloric acid (1.5 ml) was carefully added dropwise. The mixture was stirred for 30 min. To the reaction mixture was added water and the resulting product was extracted 3 times with ethyl acetate. The organic layers were combined, washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated to give 4-benzyloxy-2-chlorobenzyl alcohol (778 mg) as a white powder.
Reaction SMILES: [C:1]([N:4]1[C:13]2[C:8](=[CH:9][CH:10]=[C:11]([F:14])[CH:12]=2)[CH:7]([O:15]C(=O)C)[CH2:6][CH:5]1[CH3:19])(=[O:3])[CH3:2].[OH-].[Na+].O>C(O)C>[C:1]([N:4]1[C:13]2[C:8](=[CH:9][CH:10]=[C:11]([F:14])[CH:12]=2)[C@@H:7]([OH:15])[CH2:6][C@@H:5]1[CH3:19])(=[O:3])[CH3:2]
Reactant: CC(=O)OC1CC(C)N(C(C)=O)c2cc(F)ccc21
Agent: [Na+]
Agent: [OH-]
Solvent: CCO
Solvent: O
Product: CC(=O)N1c2cc(F)ccc2[C@@H](O)C[C@@H]1C
Reaction time: 1.5 h
Yield: 34 %

Procedure:
(Step 3) 1.4 g of 1-acetyl-7-fluoro-4-acetoxy-2-methyl-1,2,3,4-tetrahydroquinoline was dissolved in 10 mL of ethanol, and 10 mL of a 1 N aqueous solution of sodium hydroxide was added to the solution. The mixture was stirred for 1.5 hours. After completion of the reaction, water was added to the reaction liquid, and the mixture was extracted with chloroform. Subsequently, the organic layer was dehydrated over anhydrous sodium sulfate, and then was concentrated under reduced pressure. The resulting residue was purified by using silica gel chromatography (ethyl acetate:hexane=1:1), and thus 400 mg (34%) of trans-1-acetyl-7-fluoro-4-hydroxy-2-methyl-1,2,3,4-tetrahydroquinoline was obtained as a white solid.
Reaction SMILES: [OH:1][C:2]1[CH:7]=[C:6]([OH:8])[CH:5]=[CH:4][C:3]=1[C:9]([C:11]1[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][CH:12]=1)=[O:10].C(=O)([O-])[O-].[K+].[K+].[CH2:24](Br)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>CC(C)=O>[CH2:24]([O:8][C:6]1[CH:5]=[CH:4][C:3]([C:9]([C:11]2[CH:16]=[CH:15][C:14]([O:17][CH2:9][C:3]3[CH:4]=[CH:5][CH:6]=[CH:7][CH:2]=3)=[CH:13][CH:12]=2)=[O:10])=[C:2]([OH:1])[CH:7]=1)[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1
Reactant: O=C(c1ccc(O)cc1)c1ccc(O)cc1O
Reactant: BrCc1ccccc1
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CC(C)=O
Product: O=C(c1ccc(OCc2ccccc2)cc1)c1ccc(OCc2ccccc2)cc1O
Yield: 119.9 %

Procedure:
To a suspension of (2,4-dihydroxy-phenyl)-(4-hydroxy-phenyl)-methanone (9.2 g, 40 mmol) and oven dried potassium carbonate (11.6 g, 84 mmol) in acetone refluxing at 60° C., was added benzyl bromide (10 mL, 83 mmol) in two portions of 5 mL each, dropwise. The reaction was refluxed for 12 hours and solids were filtered and washed with 100 ml of CH7Cl2. The solvents combined and evaporated to give yellow product along with some tribenzylated side product, which was recrystallized from CH2Cl2:hexane (1:5) to get (9.84 g, 60%) of pure product T1. 1H NMR (400 MHz, DMSO-d6) δ, 7.4 (m, 12H, Ar—H2′/6′, 2×C6H5), 6.97 (m, 3H, Ar—H3′/5′, Ar—H6), 5.84 (d, 1H, Ar—H3), 5.6 (dd, 1H, Ar—H5), 5.14 (s, 2H, PhCH2), 4.94 (s, 2H, PhCH2).
Reaction SMILES: [NH2:1][C:2]1[S:6][N:5]=[C:4]([CH3:7])[N:3]=1.O.ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.[Cl:31][C:32]1[C:33]([C:39](O)=[O:40])=[N:34][C:35]([Cl:38])=[CH:36][CH:37]=1>C(Cl)(Cl)Cl>[Cl:31][C:32]1[C:33]([C:39]([NH:1][C:2]2[S:6][N:5]=[C:4]([CH3:7])[N:3]=2)=[O:40])=[N:34][C:35]([Cl:38])=[CH:36][CH:37]=1
Reactant: Cc1nsc(N)n1
Reactant: O=C(O)c1nc(Cl)ccc1Cl
Agent: CCN=C=NCCCN(C)C
Agent: Cl
Agent: On1nnc2ccccc21
Solvent: O
Solvent: ClC(Cl)Cl
Product: Cc1nsc(NC(=O)c2nc(Cl)ccc2Cl)n1
Temperature: 25 °C
Reaction time: 1 h
Yield: 75.3 %

Procedure:
12 g of 5-amino-3-methyl-1,2,4-thiadiazole, 21.1 g of N-hydroxybenzotriazole hydrate and 29.8 g of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride were added to a chloroform (500 ml) solution of 21 g of 3,6-dichloro-2-pyridinecarboxylic acid, and stirred at room temperature for 1 hour and then stirred overnight at 50° C. The reaction liquid was diluted with chloroform, then washed with aqueous 0.2 N hydrochloric acid solution, water and saturated saline water. After this was dried with anhydrous magnesium sulfate, the solvent was evaporated away under reduced pressure, and ethyl acetate was added to the resulting residue for crystallization to obtain 22.7 g of the entitled compound as a white solid.
Reaction SMILES: I[C:2]1[C:3]2([CH2:8][CH2:9][CH2:10][CH:11]=1)[O:7][CH2:6][CH2:5][O:4]2.C([Li])CCC.[CH3:17][C:18]1([CH3:29])[C:22]([CH3:24])([CH3:23])[O:21][B:20](OC(C)C)[O:19]1.O>C1COCC1>[CH3:17][C:18]1([CH3:29])[C:22]([CH3:24])([CH3:23])[O:21][B:20]([C:2]2[C:3]3([CH2:8][CH2:9][CH2:10][CH:11]=2)[O:7][CH2:6][CH2:5][O:4]3)[O:19]1
Reactant: IC1=CCCCC12OCCO2
Reactant: CC(C)OB1OC(C)(C)C(C)(C)O1
Agent: [Li]CCCC
Solvent: O
Solvent: C1CCOC1
Product: CC1(C)OB(C2=CCCCC23OCCO3)OC1(C)C
Temperature: -78 °C
Reaction time: 1 h
Yield: 56 %

Procedure:
To a solution of 6-iodo-1,4-dioxaspiro[4.5]dec-6-ene (Synlett, 2008, 1086-1090; 2.70 g, 10.2 mmol) in THF (30 mL), butyl lithium (1.65 M solution in hexane; 6.7 mL, 11.1 mmol) was added at −78° C. The reaction solution was stirred at −78° C. for 1 hour. Then, 4,4,5,5-tetramethyl-2-(propan-2-yloxy)-1,3,2-dioxaborolane (4.0 mL, 19.8 mmol) was added thereto, and the mixture was stirred at −78° C. for 2 hours. To the reaction solution, water (50 mL) was added, followed by extraction with ethyl acetate (50 mL). The thus obtained organic layer was dried over anhydrous sodium sulfate. After vacuum concentration, the residue was purified with silica gel chromatography (hexane/ethyl acetate=9:1) to yield the title compound (1.52 g, 56%) as a colorless oil.
Reaction SMILES: [C:1]([C:5]1[CH:12]=[CH:11][C:8]([CH:9]=O)=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[C:13]1([CH3:22])[CH:18]=[CH:17][C:16]([CH2:19][CH2:20][NH2:21])=[CH:15][CH:14]=1.[BH4-].[Na+]>CO.Cl>[C:1]([C:5]1[CH:12]=[CH:11][C:8]([CH2:9][NH:21][CH2:20][CH2:19][C:16]2[CH:17]=[CH:18][C:13]([CH3:22])=[CH:14][CH:15]=2)=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2]
Reactant: CC(C)(C)c1ccc(C=O)cc1
Reactant: Cc1ccc(CCN)cc1
Agent: Cl
Agent: [BH4-]
Agent: [Na+]
Solvent: CO
Product: Cc1ccc(CCNCc2ccc(C(C)(C)C)cc2)cc1
Temperature: 25 °C
Reaction time: 0.5 h
Yield: 100 %

Procedure:
0.39 ml of 4-tert-butylbenzaldehyde (2.25 mmol) and 0.22 ml 2-p-tolyl-ethylamine (1.5 mmol) were dissolved in 4.5 ml methanol and after stirring for 30 min at rt, were refluxed for 2.5 h. After cooling down to rt, 85 mg (2.25 mmol) sodium borohydride were added and after stirring for 5 min at rt, the reaction mixture was then refluxed for 2.5 h. After cooling down to rt, the reaction mixture was treated with 4 drops 1 N HCl and concentrated in vacuo. The residue was diluted with water/EtOAc. After separation of the organic phase, the aqueous phase was extracted with EtOAc and the combined organic phases were washed with brine, dried with magnesium sulfate, filtered off and concentrated in vacuo. The residue was purified by column chromatography (40 g silica gel; EtOAc/heptane 1:1) to give 480 mg light yellow viscous oil (100%). MS (ISP) 282.2 (M+H)+.
Reaction SMILES: [C:1]([O:7][CH2:8]Cl)(=[O:6])[C:2]([CH3:5])([CH3:4])[CH3:3].[Na+].[I-:11]>CC(C)=O>[C:1]([O:7][CH2:8][I:11])(=[O:6])[C:2]([CH3:5])([CH3:4])[CH3:3]
Reactant: CC(C)(C)C(=O)OCCl
Reactant: [I-]
Agent: [Na+]
Solvent: CC(C)=O
Product: CC(C)(C)C(=O)OCI
Temperature: 40 °C
Yield: 74.4 %

Procedure:
To a stirred solution of 8.00 g (53.30 mmol) of chloromethyl pivalate in 100 mL of acetone at RT under argon was added 24.00 g (160.00 mmol) of NaI. The mixture was heated to 40° C. for 4 h at which time the solids were removed by filtration and the filtrate was evaporated. The residue was diluted with ether, washed sequentially with water, 5% Na2S2O7, brine, and dried over MgSO4. Evaporation of the solvent provided 9.60 g (75%) of title compound as a light green oil.
Reaction SMILES: [C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH2:9][CH2:10][CH:11](/[CH:23]=[CH:24]/[C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=2[OH:31])[CH2:12][C:13]2[CH:22]=[CH:21][C:16]([C:17]([O:19][CH3:20])=[O:18])=[CH:15][CH:14]=2)=[CH:5][CH:4]=1)#[N:2].C(=O)([O-])[O-].[K+].[K+].[F:38][C:39]([F:45])([F:44])[CH2:40][CH2:41][CH2:42]Br>C(#N)C>[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH2:9][CH2:10][CH:11](/[CH:23]=[CH:24]/[C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=2[O:31][CH2:42][CH2:41][CH2:40][C:39]([F:45])([F:44])[F:38])[CH2:12][C:13]2[CH:14]=[CH:15][C:16]([C:17]([O:19][CH3:20])=[O:18])=[CH:21][CH:22]=2)=[CH:5][CH:4]=1)#[N:2]
Reactant: COC(=O)c1ccc(CC(/C=C/c2ccccc2O)CCc2ccc(C#N)cc2)cc1
Reactant: FC(F)(F)CCCBr
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CC#N
Product: COC(=O)c1ccc(CC(/C=C/c2ccccc2OCCCC(F)(F)F)CCc2ccc(C#N)cc2)cc1

Procedure:
A solution of 200 mg (0.486 mmol) of methyl 4-[(3E)-2-[2-(4-cyanophenyl)ethyl]-4-(2-hydroxyphenyl)but-3-en-1-yl]benzoate in 5 ml of acetonitrile is mixed with 101 mg (0.73 mmol) of potassium carbonate and 139 mg (0.73 mmol) of 4,4,4-trifluoro-1-bromobutane and stirred under reflux for 12 h. After conversion is complete, the salts are filtered off and the mother liquor evaporated. 253 mg (0.49 mmol, 100% of theory) of the title compound are obtained.
Reaction SMILES: [CH2:1]([N:3]([CH2:38][CH3:39])[CH2:4][CH2:5][CH2:6][NH:7][C:8]1[N:9]=[C:10]([C:27]2[CH:28]=[C:29]([CH:33]=[C:34]([F:37])[C:35]=2[CH3:36])[C:30]([OH:32])=O)[C:11]2[CH:17]=[CH:16][C:15](=[O:18])[N:14]([C:19]3[C:24]([F:25])=[CH:23][CH:22]=[CH:21][C:20]=3[F:26])[C:12]=2[N:13]=1)[CH3:2].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(CC)CC)C.[CH:71]1[N:75]=[C:74]([NH2:76])[S:73][CH:72]=1>CN(C=O)C>[CH2:38]([N:3]([CH2:1][CH3:2])[CH2:4][CH2:5][CH2:6][NH:7][C:8]1[N:9]=[C:10]([C:27]2[CH:28]=[C:29]([CH:33]=[C:34]([F:37])[C:35]=2[CH3:36])[C:30]([NH:76][C:74]2[S:73][CH:72]=[CH:71][N:75]=2)=[O:32])[C:11]2[CH:17]=[CH:16][C:15](=[O:18])[N:14]([C:19]3[C:20]([F:26])=[CH:21][CH:22]=[CH:23][C:24]=3[F:25])[C:12]=2[N:13]=1)[CH3:39]
Reactant: Nc1nccs1
Reactant: CCN(CC)CCCNc1nc(-c2cc(C(=O)O)cc(F)c2C)c2ccc(=O)n(-c3c(F)cccc3F)c2n1
Agent: CN(C)C(On1nnc2ccccc21)=[N+](C)C
Agent: F[P-](F)(F)(F)(F)F
Solvent: CCN(CC)CC
Solvent: CN(C)C=O
Product: CCN(CC)CCCNc1nc(-c2cc(C(=O)Nc3nccs3)cc(F)c2C)c2ccc(=O)n(-c3c(F)cccc3F)c2n1
Temperature: 25 °C
Reaction time: 8 h
Yield: 45.6 %

Procedure:
To the compound 3-[2-{[3-(diethylamino)propyl]amino}-8-(2,6-difluorophenyl)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-4-yl]-5-fluoro-4-methylbenzoic acid (30 mg, 0.055 mmol) in DMF (0.5 mL) were added HBTU (25 mg, 0.066 mmol), triethylamine (15.5 uL, 0.11 mmol) and 2-aminothiozole (8.26 mg, 0.0825 mmol). The mixture was stirred at rt overnight. Separation by HPLC with TFA, followed by neutralization with SPE amine cartridge afforded the title compound (15.6 mg, 46%). LC-MS m/z 622 (M+H)+.
Reaction SMILES: [CH2:1]([N:8]1[C:17]2[C:12](=[CH:13][CH:14]=[C:15]([OH:18])[CH:16]=2)[CH2:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:26]1([CH3:35])[CH:31]=[CH:30][C:29]([N:32]=[C:33]=[O:34])=[CH:28][CH:27]=1>O1CCCC1>[CH3:35][C:26]1[CH:31]=[CH:30][C:29]([NH:32][C:33](=[O:34])[O:18][C:15]2[CH:16]=[C:17]3[C:12]([CH2:11][CH2:10][CH2:9][N:8]3[CH2:1][C:2]3[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=3)=[CH:13][CH:14]=2)=[CH:28][CH:27]=1
Reactant: Cc1ccc(N=C=O)cc1
Reactant: Oc1ccc2c(c1)N(Cc1ccccc1)CCC2
Solvent: CCN(CC)CC
Solvent: C1CCOC1
Product: Cc1ccc(NC(=O)Oc2ccc3c(c2)N(Cc2ccccc2)CCC3)cc1
Temperature: 35 °C

Procedure:
A mixture of 1-benzyl-1,2,3,4-tetrahydroquinolin-7-ol (824 mg, 3.44 mM) and triethylamine (0.6 mL) in dry tetrahydrofuran (THF, 5 ml) was stirred for half an hour under nitrogen atmosphere at room temperature (35° C.). To the stirred reaction mixture, p-tolyl isocyanate (651 mg/ml, 5.16 mM) was added at once and then the reaction mixture was further stirred for 72 hours under N2 atmosphere at RT. The reaction mixture was concentrated under vacuum and then was quenched with distilled water followed by the extraction with chloroform (3×15 mL). The combined fractions of chloroform was again washed with water and dried over sodium sulphate. Further concentration of chloroform fraction under vacuum afforded the crude product, which was finally crystallized with methanol-ether (1:5) to give 8b as solid. Yield: 1.023 g, 79.77%.
Reaction SMILES: [N+:1]([C:4]1[CH:9]=[CH:8][C:7]([NH:10][C:11](=[O:14])OC)=[CH:6][CH:5]=1)([O-:3])=[O:2].[N+:15]([C:18]1[CH:24]=[CH:23][C:21]([NH2:22])=[CH:20][CH:19]=1)([O-:17])=[O:16]>C1(C)C(C)=CC=CC=1>[N+:15]([C:18]1[CH:24]=[CH:23][C:21]([NH:22][C:11]([NH:10][C:7]2[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:9][CH:8]=2)=[O:14])=[CH:20][CH:19]=1)([O-:17])=[O:16]
Reactant: COC(=O)Nc1ccc([N+](=O)[O-])cc1
Reactant: Nc1ccc([N+](=O)[O-])cc1
Solvent: Cc1ccccc1C
Product: O=C(Nc1ccc([N+](=O)[O-])cc1)Nc1ccc([N+](=O)[O-])cc1
Reaction time: 0.5 h
Yield: 84.6 %

Procedure:
9.81 g (50 mmoles) of methyl N-(4-nitrophenyl)carbamate, 6.9 g (50 mmoles) of 4-nitroaniline, 140 ml of xylene and 11.8 g (about 50 mmoles) of Genamin CS 302 D (a mixture of N,N-dimethyl-C10-18 alkylamines sold by the firm Hoechst AG) are introduced into a flask equipped with a reflux condenser, and the mixture is boiled. The yellow crystals of the end-product appear already in the 3rd minute of boiling, and the amount of the crystalline precipitate rapidly increases. After 0.5 hours of boiling the thick, orange crystal suspension is filtered in vacuo when hot, the filter cake is washed twich with 20 ml of hot xylene, each, and then with acetone, finally the product is dried in vacuo. 12.78 g (85.2%) of N,N'-bis(4-nitrophenyl)-urea are obtained. The product is uniform when examined by layer chromatography utilizing a 3:1 mixture of n-hexane and acetone as solvent, and the chromatographic appearance of the product is identical with that of the authentic sample.
Reaction SMILES: [CH:1]1([N:7]2[C:12](=[O:13])[CH2:11][C:10](=[O:14])[N:9]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([O:22]CC)=[O:21])[C:8]2=[O:25])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[N:26]([CH:29](CCCC)[C:30]([O:32]CC)=[O:31])=[C:27]=[O:28].C1(N)CCCCC1.C(Cl)(=O)CC(Cl)=O>ClCCl>[C:30]([CH2:29][NH:26][C:27]([C:11]1[C:12](=[O:13])[N:7]([CH:1]2[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]2)[C:8](=[O:25])[N:9]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([OH:22])=[O:21])[C:10]=1[OH:14])=[O:28])([OH:32])=[O:31]
Reactant: CCOC(=O)CCCCCN1C(=O)CC(=O)N(C2CCCCC2)C1=O
Reactant: CCCCC(N=C=O)C(=O)OCC
Agent: O=C(Cl)CC(=O)Cl
Solvent: NC1CCCCC1
Solvent: ClCCl
Product: O=C(O)CCCCCn1c(O)c(C(=O)NCC(=O)O)c(=O)n(C2CCCCC2)c1=O
Yield: 71 %

Procedure:
Ethyl 6-(3-cyclohexyl-2,4,6-trioxotetrahydro-1(2H)-pyrimidinyl)hexanoate. Ethyl isocyanatohexanoate (790 mg, 4.26 mmoles) and cyclohexylamine (490 uL, 4.26 mmoles) were stirred together in dichloromethane (100 mL) for 2 hours. Malonyl dichloride (414 uL, 4.26 mmoles) was added and the mixture was heated under gentle reflux for 2 hours. The mixture was purified by flash chromatography (dichloromethane to 5% methanol in dichloromethane) to give the title compound (1.07 g, 71%). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 4.56-4.67 (m, 1 H), 4.62 (tt, J=12.25, 3.79 Hz, 1 H), 4.13 (q, J=7.24 Hz, 2 H), 3.85 (t, 2 H), 2.31 (t, 2 H), 2.26 (dq, 2 H), 1.85 (d, J=13.39 Hz, 2 H), 1.57-1.73 (m, 7 H), 1.29-1.43 (m, 4 H), 1.26 (t, J=7.07 Hz, 3 H), 1.06-1.24 (m, 2 H).
Reaction SMILES: [CH2:1]([NH:8][C:9]1[N:14]2[N:15]=[CH:16][C:17]([C:18](O)=[O:19])=[C:13]2[N:12]=[CH:11][C:10]=1[C:21]([N:23]1[CH2:28][CH2:27][CH:26]([C:29]2[S:30][CH:31]=[CH:32][CH:33]=2)[CH2:25][CH2:24]1)=[O:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:34][S:35]([NH2:38])(=[O:37])=[O:36]>>[CH2:1]([NH:8][C:9]1[N:14]2[N:15]=[CH:16][C:17]([C:18]([NH:38][S:35]([CH3:34])(=[O:37])=[O:36])=[O:19])=[C:13]2[N:12]=[CH:11][C:10]=1[C:21]([N:23]1[CH2:28][CH2:27][CH:26]([C:29]2[S:30][CH:31]=[CH:32][CH:33]=2)[CH2:25][CH2:24]1)=[O:22])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
Reactant: CS(N)(=O)=O
Reactant: O=C(O)c1cnn2c(NCc3ccccc3)c(C(=O)N3CCC(c4cccs4)CC3)cnc12
Product: CS(=O)(=O)NC(=O)c1cnn2c(NCc3ccccc3)c(C(=O)N3CCC(c4cccs4)CC3)cnc12
Yield: 30.9 %

Procedure:
In the same manner as in Example 1, step 6 and using 7-benzylamino-6-[4-(thiophen-2-yl)piperidine-1-carbonyl]pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (0.06 g, 0.12 mmol) obtained in step 2 and methanesulfonamide (0.057 g, 0.600 mmol), the title compound (0.02 g, 31%) was obtained.
Reaction SMILES: [NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([CH:8]=[C:9]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[N:10]=2)[CH:7]=1.C(N(CC)CC)C.[CH3:23][N:24]([CH3:28])[C:25](Cl)=[O:26]>C1COCC1>[CH3:23][N:24]([CH3:28])[C:25](=[O:26])[NH:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([CH:8]=[C:9]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[N:10]=2)[CH:7]=1
Reactant: CN(C)C(=O)Cl
Reactant: CCOC(=O)c1cn2cc(N)ccc2n1
Solvent: C1CCOC1
Solvent: CCN(CC)CC
Product: CCOC(=O)c1cn2cc(NC(=O)N(C)C)ccc2n1
Temperature: 0 °C
Yield: 24.5 %

Procedure:
Ethyl 6-aminoimidazo[1,2-a]pyridine-2-carboxylate (0.975 mmol, 0.2 g) was dissolved in THF (10 ml). Triethylamine (2.92 mmol, 0.296 g) was added and the reaction mixture was cooled to 0° C. Dimethylcarbamyl chloride (1.462 mmol, 0.135 ml) was added carefully and the mixture was allowed to warm to ambient temperature with stirring. More of dimethylcarbamyl chloride (1.462 mmol, 0.135 ml) was added and the stirring continued for another hour. The solvent was evaporated, DCM was added and the resulting mixture was washed with NaHCO3 solution and water. The organic phase was dried, filtered and evaporated. The crude product was purified by flash chromatography. 0.066 g of the title compound was obtained. 1H-NMR (400 MHz, DMSO-d6): δ 1.31 (t, 3H), 2.95 (s, 6H), 4.29 (q, 2H), 7.39-7.44 (m, 1H), 7.50-7.54 (m, 1H), 8.41 (s, 1H), 8.54 (s, 1H), 8.89-8.93 (m, 1H).
Reaction SMILES: [C:1]([O:4][C:5]1[C:10]([C:11]([CH3:14])([CH3:13])[CH3:12])=[CH:9][C:8]([OH:15])=[C:7]([CH:16]=[C:17]([CH2:20][CH3:21])[CH2:18][CH3:19])[C:6]=1[C:22]([CH3:25])([CH3:24])[CH3:23])(=[O:3])[CH3:2].B(F)(F)F.O>ClCCl>[C:1]([O:4][C:5]1[C:10]([C:11]([CH3:12])([CH3:13])[CH3:14])=[CH:9][C:8]2[O:15][C:17]([CH2:20][CH3:21])([CH2:18][CH3:19])[CH2:16][C:7]=2[C:6]=1[C:22]([CH3:23])([CH3:24])[CH3:25])(=[O:3])[CH3:2]
Reactant: CCC(=Cc1c(O)cc(C(C)(C)C)c(OC(C)=O)c1C(C)(C)C)CC
Agent: FB(F)F
Solvent: ClCCl
Solvent: O
Product: CCC1(CC)Cc2c(cc(C(C)(C)C)c(OC(C)=O)c2C(C)(C)C)O1
Temperature: 25 °C
Reaction time: 3 h
Yield: 51.9 %

Procedure:
4-Acetoxy-3,5-di-tert-butyl-2-(2-ethyl-1-butenyl)phenol (0.85 g, 2.5 mmol) was dissolved in dichloromethane (10 ml) and BF3 etherate (0.4 ml) was added dropwise to the solution under a nitrogen atmosphere. After stirring at room temperature for 3 h, water was added to the reaction mixture and extracted with ethyl acetate. The extracted layer was washed with a saturated aqueous solution of sodium hydrogen carbonate, dried over anhydrous magnesium sulfate and concentrated. The concentrate was purified by silica gel chromatography (10% ethyl acetate in n-hexane) to afford 5-acetoxy-4,6-di-tert-butyl-2,2-diethyl-2,3-dihydrobenzofuran [0.45 g (yield, 53%)] as a pale yellow oil.