Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [Cl:1][C:2]1[N:3]([CH2:10][C:11]([OH:15])([CH3:14])[CH2:12][OH:13])[CH:4]=[C:5]([N+:7]([O-:9])=[O:8])[N:6]=1.C(N(CC)C(C)C)(C)C.[F:25][C:26]([F:43])([F:42])[C:27]1[CH:32]=[CH:31][C:30]([C:33]2[CH2:34][CH2:35][N:36]([C:39](Cl)=[O:40])[CH2:37][CH:38]=2)=[CH:29][CH:28]=1>CN(C)C1C=CN=CC=1.C1(C)C=CC=CC=1.C(OCC)(=O)C>[F:42][C:26]([F:25])([F:43])[C:27]1[CH:28]=[CH:29][C:30]([C:33]2[CH2:38][CH2:37][N:36]([C:39]([O:13][CH2:12][C:11]([OH:15])([CH3:14])[CH2:10][N:3]3[CH:4]=[C:5]([N+:7]([O-:9])=[O:8])[N:6]=[C:2]3[Cl:1])=[O:40])[CH2:35][CH:34]=2)=[CH:31][CH:32]=1
Reactant: CC(O)(CO)Cn1cc([N+](=O)[O-])nc1Cl
Reactant: O=C(Cl)N1CC=C(c2ccc(C(F)(F)F)cc2)CC1
Agent: CN(C)c1ccncc1
Solvent: CCOC(C)=O
Solvent: Cc1ccccc1
Solvent: CCN(C(C)C)C(C)C
Product: CC(O)(COC(=O)N1CC=C(c2ccc(C(F)(F)F)cc2)CC1)Cn1cc([N+](=O)[O-])nc1Cl
Temperature: 100 °C
Reaction time: 2.5 h
Yield: 59.2 %

Procedure:
2-Chloro-1-(2,3-dihydroxy-2-methylpropyl)-4-nitroimidazole prepared in Example 3 (0.13 g, 0.57 mmol), N,N-diisopropylethylamine (0.13 ml, 0.76 mmol) and 4-dimethylaminopyridine (10 mg, 0.08 mmol) were added to a suspension of 4-(4-trifluoromethylphenyl)-1,2,3,6-tetrahydropyridine-1-carbonylchloride (0.10 g, 0.38 mmol) in toluene (3 ml) followed by stirring at 100° C. for 2.5 hours. The reaction mixture was diluted with ethyl acetate, washed with water, dried over magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride/ethyl acetate=9/1) to afford 3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-(4-trifluoromethylphenyl)-1,2,3,6-tetrahydropyridine-1-carboxylate (0.11 g, yield 59%) as a colorless oil.
Reaction SMILES: Cl.[O:2]1[C:6]2[CH2:7][NH:8][CH2:9][CH2:10][C:5]=2[CH:4]=[CH:3]1.[CH:11]1[C:20]2[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=2)[CH:14]=[CH:13][C:12]=1[O:21][CH2:22][C:23](O)=[O:24].C(N(CC)CC)C.C(P(=O)(OCC)OCC)#N>ClCCl.O>[O:2]1[C:6]2[CH2:7][N:8]([C:23](=[O:24])[CH2:22][O:21][C:12]3[CH:13]=[CH:14][C:15]4[C:20](=[CH:19][CH:18]=[CH:17][CH:16]=4)[CH:11]=3)[CH2:9][CH2:10][C:5]=2[CH:4]=[CH:3]1
Reactant: O=C(O)COc1ccc2ccccc2c1
Reactant: c1cc2c(o1)CNCC2
Agent: CCOP(=O)(C#N)OCC
Agent: Cl
Solvent: O
Solvent: CCN(CC)CC
Solvent: ClCCl
Product: O=C(COc1ccc2ccccc2c1)N1CCc2ccoc2C1
Temperature: 25 °C
Reaction time: 8 h

Procedure:
To a solution of 0.160 g (1.000 mmol) of 4,5,6,7-tetrahydrofuro[2,3-c]pyridine hydrochloride, 0.24 g (1.2 mmol) of 2-naphthoxyacetic acid and 0.55 ml (4.0 mmol) of triethylamine in 30 ml of dichloromethane, 0.24 g (1.5 mmol) of diethyl cyanophosphonate was added dropwise under ice-cooling, followed by overnight stirring at room temperature. The reaction mixture was poured into water and extracted with dichloromethane 2 times. The combined organic layer was washed with water and dried over anhydrous sodium sulfate; the solvent was distilled off under reduced pressure. The resulting crude product was purified by silica gel column chromatography (hexane/ethyl acetate=3/1 to 1/1). The resulting product was purified by recrystallization from hexane/ethyl acetate (=1/1)-dichloromethane to yield the desired product.
Reaction SMILES: [Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:14]3[CH:15]=[C:16]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([CH:25]=O)[CH:20]=4)[CH:17]=[CH:18][C:13]=3[N:12]3[C:27]([CH3:30])=[N:28][N:29]=[C:11]3[C@H:10]([CH2:31][C:32]([NH:34][CH2:35][CH3:36])=[O:33])[N:9]=2)=[CH:4][CH:3]=1.[CH3:37][N:38]1[CH2:43][CH2:42][NH:41][CH2:40][CH2:39]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>C(Cl)Cl.C(O)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:14]3[CH:15]=[C:16]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([CH2:25][N:41]5[CH2:42][CH2:43][N:38]([CH3:37])[CH2:39][CH2:40]5)[CH:20]=4)[CH:17]=[CH:18][C:13]=3[N:12]3[C:27]([CH3:30])=[N:28][N:29]=[C:11]3[C@H:10]([CH2:31][C:32]([NH:34][CH2:35][CH3:36])=[O:33])[N:9]=2)=[CH:4][CH:3]=1
Reactant: CN1CCNCC1
Reactant: CCNC(=O)C[C@@H]1N=C(c2ccc(Cl)cc2)c2cc(-c3cccc(C=O)c3)ccc2-n2c(C)nnc21
Agent: CC(=O)O[BH-](OC(C)=O)OC(C)=O
Agent: O=C([O-])O
Agent: [Na+]
Solvent: CC(=O)O
Solvent: ClCCl
Product: CCNC(=O)C[C@@H]1N=C(c2ccc(Cl)cc2)c2cc(-c3cccc(CN4CCN(C)CC4)c3)ccc2-n2c(C)nnc21
Reaction time: 0.08 h

Procedure:
(S)-2-(6-(4-Chlorophenyl)-8-(3-formylphenyl)-1-methyl-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-4-yl)-N-ethylacetamide (for a preparation see Intermediate 5) (75 mg) was dissolved in DCM (5 ml). 1-methylpiperazine (25 μl) and acetic acid (8.62 μl) were added and the reaction mixture was stirred for 5 min. Sodium triacetoxyborohydride (160 mg) was added and the reaction mixture was stirred at room temperature, under nitrogen, overnight. Saturated sodium hydrogen carbonate solution (5 ml) was added and the reaction mixture was stirred for 10 min. The organic phase was separated and the saturated sodium hydrogen carbonate solution was extracted with DCM (10 ml). The DCM extracts were combined, dried and the solvent was evaporated. The residue was chromatographed (0-15% methanol:DCM), triturated with diethyl ether and dried in a vacuum dessicator at 40° C. over the weekend to give (S)-2-(6-(4-chlorophenyl)-1-methyl-8-(3-((4-methylpiperazin-1-yl)methyl)phenyl)-4H-benzo[f][1,2,4]triazolo[4,3-a][1,4]diazepin-4-yl)-N-ethylacetamide (49.2 mg) as a white solid. LCMS (formate): MH+ 582/584, RT 0.77 min
Reaction SMILES: [H-].[Na+].[CH3:3][O:4][C:5]1[N:6]=[C:7]2[C:12](=[CH:13][CH:14]=1)[N:11]=[CH:10][CH:9]=[C:8]2[CH:15]=O.[CH3:17][C:18](=[O:22])[O:19][CH2:20][CH3:21]>C1COCC1.O>[CH2:20]([O:19][C:18](=[O:22])/[CH:17]=[CH:15]/[C:8]1[C:7]2[C:12](=[CH:13][CH:14]=[C:5]([O:4][CH3:3])[N:6]=2)[N:11]=[CH:10][CH:9]=1)[CH3:21]
Reactant: CCOC(C)=O
Reactant: COc1ccc2nccc(C=O)c2n1
Agent: [H-]
Agent: [Na+]
Solvent: O
Solvent: C1CCOC1
Product: CCOC(=O)/C=C/c1ccnc2ccc(OC)nc12
Temperature: 25 °C
Reaction time: 5 h
Yield: 56 %

Procedure:
Triethylphosphonoacetate (7.3 g, 32.6 mmol) was added to a suspension of a NaH dispersion (1.4 g, 32.5 mmol, 55% in paraffin) in THF (40 mL) at 0° C. The mixture was stirred at 0° C. for 20 min before the dropwise addition of 6-methoxy-[1,5]naphthyridine-4-carbaldehyde (4.0 g, 21.3 mmol; prepared as in WO 2006/032466) in THF. The mixture was stirred at rt for 5 h, diluted with water and EA. The phases were separated and the aq. phase extracted with EA (2 times 50 mL). The combined org. phases were washed with brine, dried over MgSO4 and concentrated. The residue was purified by chromatography on SiO2 (Hex/EA 1:1) to give the desired alkene as a colourless solid (3.0 g, 56% yield).
Reaction SMILES: [NH:1]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[C@H:2]([C:4]([OH:6])=O)[CH3:3].[NH2:14][C@H:15]([C:17]([N:19]1[CH2:33][CH2:32][CH2:31][C@H:20]1[C:21]([O:23][CH2:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=[O:22])=[O:18])[CH3:16].Cl.N(C(OC(C)(C)C)=O)[C@H](C(N1CCC[C@H]1C(OCC1C=CC=CC=1)=O)=O)C>>[NH:1]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[C@H:2]([C:4]([NH:14][C@H:15]([C:17]([N:19]1[CH2:33][CH2:32][CH2:31][C@H:20]1[C:21]([O:23][CH2:24][C:25]1[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=1)=[O:22])=[O:18])[CH3:16])=[O:6])[CH3:3]
Reactant: C[C@H](N)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1
Reactant: C[C@H](NC(=O)OC(C)(C)C)C(=O)O
Agent: C[C@H](NC(=O)OC(C)(C)C)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1
Agent: Cl
Product: C[C@H](NC(=O)OC(C)(C)C)C(=O)N[C@@H](C)C(=O)N1CCC[C@H]1C(=O)OCc1ccccc1
Yield: 36.5 %

Procedure:
Boc-Ala-OH (11.5 g, 48.4 mmoles) was coupled to H-AlaPro-OBzl·HCl (14.9, 47.8 mmoles) by procedures substantially similar to those described above for the preparation of Boc-AlaPro-OBzl, yielding a foam, 22 g. This product crystallized from ethyl acetate to yield Boc-AlaAlaPro-OBzl (7.8 g, mp 120°-121°) in the first crop and 11.1 g (mp 111°-117°) in a second crop. First crop-Anal. Calcd. for C23H33N3O6 (mp 120°-121°): C=61.71%, H=7.45%, N=9.39%. Found: C=61.74%, H=7.56%, and N=9.46%.
Reaction SMILES: [CH:1]1[N:9]2[C:4]([C:5]3([CH2:18][CH2:17][NH:16][CH2:15][CH2:14]3)[O:6][C:7]3[CH:13]=[CH:12][CH:11]=[CH:10][C:8]=32)=[CH:3][CH:2]=1.[F:19][C:20]1[CH:28]=[CH:27][C:23]([C:24](O)=[O:25])=[CH:22][C:21]=1[C:29]([F:32])([F:31])[F:30].C(N(CC)CC)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[F:19][C:20]1[CH:28]=[CH:27][C:23]([C:24]([N:16]2[CH2:17][CH2:18][C:5]3([O:6][C:7]4[CH:13]=[CH:12][CH:11]=[CH:10][C:8]=4[N:9]4[CH:1]=[CH:2][CH:3]=[C:4]34)[CH2:14][CH2:15]2)=[O:25])=[CH:22][C:21]=1[C:29]([F:30])([F:31])[F:32]
Reactant: O=C(O)c1ccc(F)c(C(F)(F)F)c1
Reactant: c1ccc2c(c1)OC1(CCNCC1)c1cccn1-2
Agent: CN(C)C(On1nnc2cccnc21)=[N+](C)C
Agent: F[P-](F)(F)(F)(F)F
Solvent: CN(C)C=O
Solvent: CCN(CC)CC
Product: O=C(c1ccc(F)c(C(F)(F)F)c1)N1CCC2(CC1)Oc1ccccc1-n1cccc12
Temperature: 25 °C
Reaction time: 1 h
Yield: 72.7 %

Procedure:
Spiro[piperidine-4,4′-pyrrolo[2,1-c][1,4]benzoxazine] (100 mg, 0.361 mmol), 4-fluoro-3-(trifluoromethyl)benzoic acid (75.2 mg, 0.361 mmol), and triethylamine (110 mg, 151 μL, 1.08 mmol) were combined in DMF (3 mL) and HATU (137 mg, 0.361 mmol) was added. The reaction was stirred at room temperature for 1 h and was concentrated. The residue was purified by column chromatography (silica gel: 0-50% ethyl acetate in hexanes) to give (4-fluoro-3-(trifluoromethyl)phenyl)(spiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4′-piperidine]-1′-yl)methanone (113 mg, 73%). ESI-MS m/z calc. 430.1. found 431.1 (M+1)+; Retention time: 2.24 minutes (4 min run).
Reaction SMILES: [C:1](Cl)(=[O:3])[CH3:2].C(N(CC)CC)C.[C:12]1([CH3:19])[C:17]([OH:18])=[CH:16][CH:15]=[CH:14][CH:13]=1>CN(C)C1C=CN=CC=1.C1(C)C=CC=CC=1>[C:1]([O:18][C:17]1[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=1[CH3:19])(=[O:3])[CH3:2]
Reactant: Cc1ccccc1O
Reactant: CC(=O)Cl
Agent: CN(C)c1ccncc1
Solvent: CCN(CC)CC
Solvent: Cc1ccccc1
Product: CC(=O)Oc1ccccc1C
Temperature: 65 °C

Procedure:
First 235.5 g (3.3 moles) acetyl chloride then 282.8 g (2.8 moles) triethylamine are added dropwise to a mixture of 324 g (3 moles) o-cresol and 36.6 g (0.3 mole) 4-dimethylaminopyridine in 1 liter of toluene. The mixture is then heated for 3 h at 65° C. The resulting solid hydrochloride is separated by filtration and the organic phase is washed twice with 1 N hydrochloric acid then with water. The solution is dried and then the solvent is recovered under vacuum. The remaining oil is distilled under vacuum. It has a boiling point of 87° C. at 12 Torr. The yield is 428.8 g.
Reaction SMILES: [CH:1]([C:4]1[CH:9]=[CH:8][C:7]([C@@H:10]2[C:14]3[C:15]([CH3:28])=[C:16]([NH:20][C:21](=[O:27])[CH2:22][C:23]([CH3:26])([CH3:25])[CH3:24])[C:17]([CH3:19])=[CH:18][C:13]=3[O:12][CH2:11]2)=[CH:6][CH:5]=1)([CH3:3])[CH3:2].[C:29](Cl)(=[O:36])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1>>[C:29]([C:18]1[C:13]2[O:12][CH2:11][C@H:10]([C:7]3[CH:6]=[CH:5][C:4]([CH:1]([CH3:2])[CH3:3])=[CH:9][CH:8]=3)[C:14]=2[C:15]([CH3:28])=[C:16]([NH:20][C:21](=[O:27])[CH2:22][C:23]([CH3:26])([CH3:25])[CH3:24])[C:17]=1[CH3:19])(=[O:36])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1
Reactant: O=C(Cl)c1ccccc1
Reactant: Cc1cc2c(c(C)c1NC(=O)CC(C)(C)C)[C@@H](c1ccc(C(C)C)cc1)CO2
Product: Cc1c(NC(=O)CC(C)(C)C)c(C)c2c(c1C(=O)c1ccccc1)OC[C@@H]2c1ccc(C(C)C)cc1
Yield: 74 %

Procedure:
Using (+)-N-((3R)-3-(4-isopropylphenyl)-4,6-dimethyl-2,3-dihydro-1-benzofuran-5-yl)-3,3-dimethylbutanamide obtained in Example 37 and benzoyl chloride, the title compound was obtained in the same manner as in Example 38.
Reaction SMILES: [NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]([CH2:10][C:11]([OH:13])=[O:12])=[CH:2]1.[CH3:14]O.Cl>C(OCC)C>[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]([CH2:10][C:11]([O:13][CH3:14])=[O:12])=[CH:2]1
Reactant: CO
Reactant: O=C(O)Cc1c[nH]c2ccccc12
Agent: Cl
Solvent: CCOCC
Product: COC(=O)Cc1c[nH]c2ccccc12
Yield: 94 %

Procedure:
A mixture of commercially available (1H-indol-3-yl)acetic acid (200 g, 1.14 mol), methanol (2700 mL) and a saturated solution of HCl in diethyl ether (750 mL) was stirred at room temperature for 16 h. The solvent was removed in vacuo, and the residue was subjected to aqueous work-up under alkaline conditions by the use of aqueous ammonia to yield methyl (1H-indol-3-yl)acetate as an oil (202.5 g, 94%). The crude oil was dissolved in acetic acid (2 L), and sodium cyanoborohydride (60 g, 0.95 mol) was added in portions of 1 g over a period of 8 h. The resulting mixture was stirred at room temperature for 16 h and then poured onto an ice/water mixture. Aqueous work-up under alkaline conditions gave the crude product that was purified by flash chromatography (ethyl acetate/heptane 1:1) to give the title compound (97.3 g, 48%).
Reaction SMILES: [NH2:1][C:2]1[CH:12]=[C:11]([O:13][CH2:14][C:15]([F:18])([F:17])[F:16])[C:10]([O:19][CH3:20])=[CH:9][C:3]=1[C:4](OCC)=[O:5].[CH:21]([NH2:23])=O>C(O)C>[CH3:20][O:19][C:10]1[CH:9]=[C:3]2[C:2](=[CH:12][C:11]=1[O:13][CH2:14][C:15]([F:18])([F:17])[F:16])[N:1]=[CH:21][NH:23][C:4]2=[O:5]
Reactant: CCOC(=O)c1cc(OC)c(OCC(F)(F)F)cc1N
Reactant: NC=O
Solvent: CCO
Product: COc1cc2c(=O)[nH]cnc2cc1OCC(F)(F)F
Temperature: 175 °C
Reaction time: 18 h
Yield: 84 %

Procedure:
A mixture of ethyl 2-amino-4-(2,2,2-trifluoroethoxy)-5-methoxybenzoate (20.2 g, 69.1 mmol) and formamide (50 ml) was heated at 175° C. for 6 hours. The mixture was allowed to cool to ambient temperature, ethanol (150 ml) was added and the reaction allowed to stand for 18 hours. Collection of the solid which had precipitated by suction filtration, followed by washing with ethanol (2×50 ml) and drying in vacuo, yielded 6-methoxy-7-(2,2,2-trifluoroethoxy)-3,4-dihydroquinazolin-4-one (15.8 g, 84% yield) as a pale brown crystalline solid:
Reaction SMILES: [CH2:1]([O:8][C:9]1[N:10]=[N:11][C:12]([C:23]2([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[CH2:25][CH2:24]2)=[CH:13][C:14]=1[O:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(OC1N=NC(C(C2C=CC=CC=2)=C)=CC=1OCC1C=CC=CC=1)C1C=CC=CC=1.C(OC1N=NC(C(C2C=CC([F:92])=CC=2)=C)=CC=1OCC1C=CC=CC=1)C1C=CC=CC=1>>[CH2:1]([O:8][C:9]1[N:10]=[N:11][C:12]([C:23]2([C:26]3[CH:31]=[CH:30][C:29]([F:92])=[CH:28][CH:27]=3)[CH2:24][CH2:25]2)=[CH:13][C:14]=1[O:15][CH2:16][C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
Reactant: c1ccc(COc2cc(C3(c4ccccc4)CC3)nnc2OCc2ccccc2)cc1
Reactant: C=C(c1ccc(F)cc1)c1cc(OCc2ccccc2)c(OCc2ccccc2)nn1
Agent: C=C(c1ccccc1)c1cc(OCc2ccccc2)c(OCc2ccccc2)nn1
Product: Fc1ccc(C2(c3cc(OCc4ccccc4)c(OCc4ccccc4)nn3)CC2)cc1
Yield: 16 %

Procedure:
Prepared as described for 3,4-bis(benzyloxy)-6-(1-phenylcyclopropyl)pyridazine (Intermediate 26) from 3,4-bis(benzyloxy)-6-(1-phenylethenyl)pyridazine (Intermediate 41) in 16% yield.
Reaction SMILES: [C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[C:22](=[O:23])[C:21]3[C:20]([C:24](O)=[O:25])=[CH:19][CH:18]=[CH:17][C:16]=3[CH2:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C[N:28](C)C=O.C(N(C(C)C)CC)(C)C>>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[CH2:15][C:16]3[C:21](=[C:20]([C:24](=[O:25])[NH2:28])[CH:19]=[CH:18][CH:17]=3)[C:22]2=[O:23])[CH2:10][CH2:9]1)=[O:7])([CH3:3])([CH3:2])[CH3:4]
Reactant: CC(C)(C)OC(=O)N1CCC(N2Cc3cccc(C(=O)O)c3C2=O)CC1
Reactant: CN(C)C=O
Solvent: CCN(C(C)C)C(C)C
Product: CC(C)(C)OC(=O)N1CCC(N2Cc3cccc(C(N)=O)c3C2=O)CC1
Temperature: 25 °C
Reaction time: 8 h
Yield: 74 %

Procedure:
To a solution of 2-(1-tert-butoxycarbonyl-piperidin-4-yl)-3-oxo-2,3-dihydro-1H-isoindole-4-carboxylic acid (3.7 g, 10.3 mmol) in N,N-dimethylformamide (60 mL) hydroxybenzotriazole ammonium salt (3.15 g, 20.7 mmol), 1-ethyl-3-(3′-dimethylamino) carbodiimide hydrochloric acid salt (3.34 g, 20.7 mmol) and diisopropylethylamine (5.3 mL, 30.9 mmol) were added. The reaction mixture was stirred at room temperature overnight. The solvent was removed under reduce pressure and the residue was dissolved in ethyl acetate. The solution was washed twice with saturated sodium carbonate aqueous solution, and the organic phase was dried over anhydrous sodium sulfate and concentrated in vacuo. The crude was purified by flash chromatography (dichloromethane/methanol 97:3) to afford the title compound (2.74 g, 74%) as a white solid.
Reaction SMILES: [F:1][C:2]1[C:7]([F:8])=[CH:6][C:5]([F:9])=[C:4]([F:10])[C:3]=1[CH3:11].[Br:12]N1C(=O)CCC1=O.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1>C(Cl)(Cl)(Cl)Cl>[F:1][C:2]1[C:7]([F:8])=[CH:6][C:5]([F:9])=[C:4]([F:10])[C:3]=1[CH2:11][Br:12]
Reactant: O=C1CCC(=O)N1Br
Reactant: Cc1c(F)c(F)cc(F)c1F
Agent: O=C(OOC(=O)c1ccccc1)c1ccccc1
Solvent: ClC(Cl)(Cl)Cl
Product: Fc1cc(F)c(F)c(CBr)c1F
Temperature: 25 °C

Procedure:
A mixture of 2,3,5,6-tetrafluorotoluene (1.7 g), N-bromosuccinimide (1.9 g), dry carbon tetrachloride (10 ml) and benzoyl peroxide (0.01 g) was heated at the reflux temperature for 20 hours, cooled to the ambient temperature (ca.25° C.) filtered and the filtrate diluted with diethyl ether. The ethereal solution was washed with water, dried over anhydrous magnesium sulphate and concentrated by evaporation of the solvents to yield 2,3,5,6-tetrafluorobenzyl bromide as a mobile colourless oil.
Reaction SMILES: C([Mg]Br)C.[CH3:5][CH:6]([O:10][CH2:11]/[CH:12]=[CH:13]/[C:14]#[CH:15])[O:7][CH2:8][CH3:9].Br[CH2:17][C:18]#[C:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24].[Cl-].[NH4+]>O1CCCC1>[CH3:5][CH:6]([O:10][CH2:11]/[CH:12]=[CH:13]/[C:14]#[C:15][CH2:17][C:18]#[C:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24])[O:7][CH2:8][CH3:9]
Reactant: CCCCCC#CCBr
Reactant: C#C/C=C/COC(C)OCC
Agent: CC[Mg]Br
Agent: [Cl-]
Agent: [NH4+]
Solvent: C1CCOC1
Product: CCCCCC#CCC#C/C=C/COC(C)OCC
Temperature: 25 °C
Reaction time: 0.17 h

Procedure:
A solution of ethyl magnesium bromide in tetrahydrofuran (47 mL, 1.17 M) was treated dropwise with a solution of (E)-4-methyl-3,5-dioxa-7-decen-9-yne (7.7 g) in tetrahydrofuran (10 mL). After complete addition, the mixture was heated at 60° for 45 min, cooled to room temperature, treated with anhydrous cuprous chloride (0.35 g, dried at 145° at 0.05 mmHg for 16 hours) and stirred for 10 min. The 1-bromo-2-octyne (7.23 g) in tetrahydrofuran (10 mL) was added dropwise to the above mixture (mild exothermic reaction) and after complete addition the resulting mixture was heated for 45 min at 60° C. After this time, the contents were cooled to room temperature, poured onto saturated aqueous ammonium chloride solution and extracted with ether. The combined ether extracts were washed with brine, dried (MgSO4) and concentrated. The residue was purified by liquid chromatography (two columns, 3% by volume ethyl acetate in 97% by volume hexane) to yield the product (E)-4-methyl-3,5-dioxa-7-octadecen-9,12-diyne
Reaction SMILES: [NH2:1][CH2:2][CH2:3][OH:4].Cl[C:6]([O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:7]>C(Cl)Cl>[C:6]([NH:1][CH2:2][CH2:3][OH:4])([O:8][CH2:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)=[O:7]
Reactant: NCCO
Reactant: O=C(Cl)OCc1ccccc1
Solvent: ClCCl
Product: O=C(NCCO)OCc1ccccc1
Temperature: 25 °C
Reaction time: 8 h
Yield: 66 %

Procedure:
To 0° C. cold of CH2Cl2 solution (300 mL) of 2-aminoethanol (10.8 g, 0.177 mole) and TEA (26.8 g; 0.265 mole) was added slowly a CH2Cl2 solution (50 mL) of benzyl chloroformate (33.2 g, 0.194 mole). After complete addition, the resulting solution was gradually warmed to room temperature and stirring was continued at room temperature overnight. The reaction was worked up and purified by flash column chromatography on silica gel, affording 22.8 g in 66% yield of title compound. 1H NMR (CDCl3): δ 7.34-7.40 (m, 5H), 5.20-5.32 (m, 1H), 5.14 (s, 2H), 3.74 (q, 2H), 3.37 (q, 2H), 2.38 (bs, 1H).
Reaction SMILES: [O:1]1[C@H:3]2[CH2:4][C@H:5]3[C@:20]([CH3:22])([CH2:21][C@@H:2]12)[C@@H:19]1[C@H:8]([C@H:9]2[C@:16]([CH3:23])([CH2:17][CH2:18]1)[C@@H:12]([C:13](=[O:15])[CH3:14])[CH2:11][CH2:10]2)[CH2:7][CH2:6]3.S(=O)(=O)(O)O.[C:29](=O)(O)[O-:30].[Na+].CCOCC>CO.CCCCCC.C(OCC)(=O)C>[CH3:29][O:30][C@H:2]1[CH2:21][C@@:20]2([CH3:22])[C@@H:5]([CH2:6][CH2:7][C@@H:8]3[C@@H:19]2[CH2:18][CH2:17][C@@:16]2([CH3:23])[C@H:9]3[CH2:10][CH2:11][C@@H:12]2[C:13](=[O:15])[CH3:14])[CH2:4][C@@H:3]1[OH:1]
Reactant: CC(=O)[C@H]1CC[C@H]2[C@@H]3CC[C@H]4C[C@@H]5O[C@@H]5C[C@]4(C)[C@H]3CC[C@]12C
Reactant: O=C([O-])O
Agent: O=S(=O)(O)O
Agent: [Na+]
Solvent: CCCCCC
Solvent: CCOC(C)=O
Solvent: CCOCC
Product: CO[C@H]1C[C@@]2(C)[C@@H](CC[C@@H]3[C@@H]2CC[C@]2(C)[C@@H](C(C)=O)CC[C@@H]32)C[C@@H]1O
Reaction time: 0.17 h
Yield: 60 %

Procedure:
2α,3α-Epoxy-5α-pregnan-20-one (325 mg) in 80 mL of methanol was treated with a 1 mL solution of methanol containing drops of concentrated sulfuric acid at room temperature. This mixture was stirred at this temperature for 10 minutes and then poured into a cold saturated solution of sodium bicarbonate and ether. The organic phase was washed several times with small a portion of bicarbonate, brine and dried over potassium carbonate. The concentrated organic phase was tested by TLC for complete reaction. Flash chromatography on silica gel with hexane/ethyl acetate solvent mixture (80:20) produced 209 mg (60% yield).
Reaction SMILES: BrC[Mg].[CH2:4]([N:6]1[C:14]2[C:9](=[N:10][CH:11]=[CH:12][CH:13]=2)[N:8]([C:15]2[CH:36]=[CH:35][C:18]([O:19][C:20]3[N:24]([CH2:25]C(OCC)=O)[C:23]4[CH:31]=[CH:32][CH:33]=[CH:34][C:22]=4[N:21]=3)=[CH:17][CH:16]=2)[C:7]1=[O:37])[CH3:5].[Cl-].[Cl-].[Ca+2]>C1COCC1>[CH2:4]([N:6]1[C:14]2[C:9](=[N:10][CH:11]=[CH:12][CH:13]=2)[N:8]([C:15]2[CH:16]=[CH:17][C:18]([O:19][C:20]3[N:24]([CH2:25][C:18]([OH:19])([CH3:35])[CH3:17])[C:23]4[CH:31]=[CH:32][CH:33]=[CH:34][C:22]=4[N:21]=3)=[CH:35][CH:36]=2)[C:7]1=[O:37])[CH3:5]
Reactant: CCOC(=O)Cn1c(Oc2ccc(-n3c(=O)n(CC)c4cccnc43)cc2)nc2ccccc21
Agent: [Ca+2]
Agent: [Cl-]
Agent: [Mg]CBr
Solvent: C1CCOC1
Product: CCn1c(=O)n(-c2ccc(Oc3nc4ccccc4n3CC(C)(C)O)cc2)c2ncccc21
Yield: 121.9 %

Procedure:
Bromomethylmagnesium (3M in ether, 1.924 mL) was added to a solution of ethyl {2-[4-(1-ethyl-2-oxo-1,2-dihydro-3H-imidazo[4,5-b]pyridin-3-yl)phenoxy]-1H-benzimidazol-1-yl}acetate (220 mg) in THF (40 ml) at 0° C. The mixture was stirred at room temperature under a dry atmosphere (CaCl2 tube) for 3 h. The reaction mixture was concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, eluted with 0%-50% EtOAc in hexane) to give 1-ethyl-3-(4-{[1-(2-hydroxy-2-methylpropyl)-1H-benzimidazol-2-yl]oxy}phenyl)-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (130 mg) as white crystals.
Reaction SMILES: Cl[C:2]1[C:10]2[C:9]3[CH:11]=[C:12]([C:15]#[N:16])[N:13]=[CH:14][C:8]=3[N:7]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[C:6]=2[N:5]=[CH:4][CH:3]=1.[H-].[Na+].[O:27]1CCCC1>O.C(OCC)(=O)C>[OH:27][C:2]1[C:10]2[C:9]3[CH:11]=[C:12]([C:15]#[N:16])[N:13]=[CH:14][C:8]=3[N:7]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[C:6]=2[N:5]=[CH:4][CH:3]=1
Reactant: C[Si](C)(C)CCOCn1c2cnc(C#N)cc2c2c(Cl)ccnc21
Reactant: C1CCOC1
Agent: [H-]
Agent: [Na+]
Solvent: O
Solvent: CCOC(C)=O
Product: C[Si](C)(C)CCOCn1c2cnc(C#N)cc2c2c(O)ccnc21
Temperature: 25 °C
Reaction time: 0.08 h

Procedure:
To a solution of 4-chloro-9-(2-trimethylsilanyl-ethoxymethyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile (100 mg, 0.3 mmol) in tetrahydrofuran (1.8 mL) was added sodium hydride as a 60% dispersion in mineral oil (22 mg, 0.56 mmol) followed by a few drops of water. The reaction mixture was stirred at ambient temperature for 5 minutes and then at 40° C. for 2 hours. The mixture was diluted with water (20 mL) and ethyl acetate (50 mL). The organic layer was separated, dried over sodium sulfate, filtered, concentrated in vacuo, and purified flash chromatography (silica, 4 g, ISCO, 5-100% ethyl acetate in heptane) to afford the title compound as a pale yellow oil, which was used in the next step without any further purification (70 mg).