Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Br:8][CH2:9][C:10](Br)=[O:11].C(N(CC)CC)C>ClCCl>[Br:8][CH2:9][C:10]([NH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)=[O:11]
Reactant: O=C(Br)CBr
Reactant: Nc1ccccc1
Solvent: CCN(CC)CC
Solvent: ClCCl
Product: O=C(CBr)Nc1ccccc1
Temperature: 25 °C

Procedure:
A solution of aniline (0.016 mol) in 40 mL of dichloromethane is cooled on ice, and 1.0 equivalent of bromoacetyl bromide in 3 mL of dichloromethane is added dropwise, followed by 0.019 mol of triethylamine (TEA). The solution turns dark and a precipate forms, as the reaction mixture is warmed to RT over 3 h. The mixture is concentrated and taken up in ethyl acetate (EtOAc) and washed three times with water. The organic phase is dried over anhydrous sodium sulphate (Na2SO4), filtered and concentrated. The residue is purified by crystallization from EtOAc to afford 2-bromo-N-phenylacetamide: m.p. 131-135° C.; 1H-NMR (CDCl3) δ 4.01 (s, 2H), 7.18 (m, 1H), 7.36 (m, 2H), 7.54 (2H), 8.09 (s, 1H).
Reaction SMILES: [Na].[C:2]([O:9][CH2:10][CH3:11])(=[O:8])[C:3]([O:5]CC)=O.[CH3:12][O:13][CH2:14][C:15](=[O:17])[CH3:16].S(=O)(=O)(O)O>C(O)C>[CH3:12][O:13][CH2:14][C:15](=[O:17])[CH2:16][C:3](=[O:5])[C:2]([O:9][CH2:10][CH3:11])=[O:8]
Reactant: CCOC(=O)C(=O)OCC
Reactant: COCC(C)=O
Agent: O=S(=O)(O)O
Agent: [Na]
Solvent: CCO
Product: CCOC(=O)C(=O)CC(=O)COC
Temperature: 25 °C
Reaction time: 1 h

Procedure:
Under nitrogen atmosphere sodium (1.61 g, 70.0 mmol) was dissolved in small pieces in a flask containing dry ethanol (150 ml). Diethyl oxalate (8.15 ml, 60 mmol) and methoxyacetone (5.52 ml, 60.0 mmol) were added with a syringe. The resulting mixture was stirred at RT for 1 h. The flask was put in an ice bath and into it a mixture of sulphuric acid and ice water was added dropwise. The resulting precipitate was filtered and washed with DCM. The ethanol/DCM filtrate was evaporated. The residue was dissolved in DCM, extracted with brine and the DCM phase dried with Na2SO4, filtered and evaporated. The product was purified with flash chromatography. 1H-NMR (400 MHz; DMSO-d6): δ 1.28 (t, 3H), 3.34 (s, 3H), 4.19-4.23 (m, 2H), 4.27 (q, 2H).
Reaction SMILES: Cl[C:2]1[CH:3]=[CH:4][CH:5]=[C:6]([CH3:9])[N+:7]=1[O-:8].[H-].[Na+].[CH2:12]([OH:19])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.Cl>C(Cl)(Cl)Cl.O.CS(C)=O>[CH2:12]([O:19][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]([CH3:9])[N+:7]=1[O-:8])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1
Reactant: OCc1ccccc1
Reactant: Cc1cccc(Cl)[n+]1[O-]
Agent: Cl
Agent: [H-]
Agent: [Na+]
Solvent: CS(C)=O
Solvent: O
Solvent: ClC(Cl)Cl
Product: Cc1cccc(OCc2ccccc2)[n+]1[O-]
Temperature: 25 °C
Reaction time: 8 h
Yield: 54 %

Procedure:
0.80 g of 6-chloro-2-picoline 1-oxide was added to an alcoholate solution prepared from 0.33 g of 60% oily sodium hydride, 0.69 ml of benzyl alcohol and 5 ml of dimethyl sulfoxide. The mixture was stirred overnight at room temperature. 1N-HCl (1.7 ml) was added to the reaction mixture and then water and chloroform were added. The organic layer was separated, and dried over anhydrous sodium sulfate. The desiccant was removed by filtration, and the filtrate was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (Wakogel C-200, 100 g; eluting solvent: chloroform/methanol=80/1→40/1) to give 0.64 g (yield 54%) of 6-benzyloxy-2-picoline 1-oxide.
Reaction SMILES: [OH:1][CH2:2][CH2:3][N:4]1[C:8]([N+:9]([O-:11])=[O:10])=[CH:7][N:6]=[C:5]1[CH3:12].N1C=CC=CC=1.[CH3:19][S:20](Cl)(=[O:22])=[O:21]>O>[CH3:19][S:20]([OH:22])(=[O:1])=[O:21].[OH:1][CH2:2][CH2:3][N:4]1[C:8]([N+:9]([O-:11])=[O:10])=[CH:7][N:6]=[C:5]1[CH3:12]
Reactant: CS(=O)(=O)Cl
Agent: Cc1ncc([N+](=O)[O-])n1CCO
Solvent: c1ccncc1
Solvent: O
Product: CS(=O)(=O)O
Temperature: 5 °C
Reaction time: 1 h

Procedure:
A suspension of 200 parts of 1-(2-hydroxyethyl)-2-methyl-5-nitroimidazole in 600 parts of pyridine is cooled to 5° C. in an ice bath and 140 parts of methanesulfonyl chloride is added portionwise at 0°-5° C. over a period of 4 hours. The mixture is then stirred at about 0° C. for 1 hour before it is slowly diluted with 600 parts of water while maintaining the temperature at 0°-5° C. The solid which forms is separated by filtration, washed with water and dried to give 1-(2-hydroxyethyl)-2-methyl-5-nitroimidazole methylsulfonate. Tosylates of 1-(2-hydroxyethyl)imidazoles are prepared in a similar manner using p-toluenesulfonyl chloride.
Reaction SMILES: [CH3:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([CH3:10])[C:3]=1[CH2:4][OH:5].N(C(OC(C)C)=O)=NC(OC(C)C)=O.O[C:26]1[CH:27]=[C:28]([CH2:32][C:33]([O:35][CH2:36][CH3:37])=[O:34])[CH:29]=[CH:30][CH:31]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.CCOCC>[CH3:1][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([CH3:10])[C:3]=1[CH2:4][O:5][C:30]1[CH:29]=[C:28]([CH2:32][C:33]([O:35][CH2:36][CH3:37])=[O:34])[CH:27]=[CH:26][CH:31]=1
Reactant: Cc1cccc(C)c1CO
Reactant: CCOC(=O)Cc1cccc(O)c1
Agent: CC(C)OC(=O)N=NC(=O)OC(C)C
Agent: c1ccc(P(c2ccccc2)c2ccccc2)cc1
Solvent: CCOCC
Solvent: C1CCOC1
Product: CCOC(=O)Cc1cccc(OCc2c(C)cccc2C)c1
Temperature: 25 °C
Reaction time: 4 h

Procedure:
A solution of 2,6-Dimethylbenzyl alcohol (5.25 g, 38.6 mmol) and diisopropyl azodicarboxylate (DIAD, 8.49 g, 42 mmol) in THF (30 ml) was added drop wise to a solution of Ethyl 3-hydroxyphenylacetate (6.66 g, 37 mmol) and triphenylphosphine (11 g, 42 mmol) in THF (100 ml). The reaction mixture was stirred at room temperature for 4 hours, diluted with ether and washed with water and brine. The organic layer was dried over Na2SO4, filtered, concentrated, and purified by flash chromatography on a silica gel column (hex:ethyl acetate 4:1) to give the title compound.
Reaction SMILES: [CH3:1][O:2][C:3]([O:19][CH3:20])([C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][CH:11]=[C:12]([O:17][CH3:18])[CH:13]=2)[CH:8]=1)[CH:4]([OH:6])[CH3:5].[CH3:21][S:22](Cl)(=[O:24])=[O:23]>N1C=CC=CC=1>[CH3:21][S:22]([O:6][CH:4]([CH3:5])[C:3]([O:19][CH3:20])([O:2][CH3:1])[C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][CH:11]=[C:12]([O:17][CH3:18])[CH:13]=2)[CH:8]=1)(=[O:24])=[O:23]
Reactant: COc1ccc2cc(C(OC)(OC)C(C)O)ccc2c1
Reactant: CS(=O)(=O)Cl
Solvent: c1ccncc1
Product: COc1ccc2cc(C(OC)(OC)C(C)OS(C)(=O)=O)ccc2c1
Reaction time: 3 h

Procedure:
1.2 G of 1,1-dimethoxy-1-(6 methoxy-2-naphthyl)-propan 2-ol is dissolved in 10 ml of pyridine and 1.1 g of methanesulfonyl chloride is added to that solution in one portion. The mixture is allowed to stand for about three hours and the separation of pyridine hydrochloride crystals is observed. The reaction mixture is poured into 100 ml of water and extracted with 50 ml of ether. The ethereal extract is washed several times with water and dried over magnesium sulfate. The ethereal layer is evaporated under reduced pressure to afford 1,1-dimethoxy-1-(6-methoxy-2-naphthyl)prop-2-yl methanesulfonate as an oil. The compound displays a characteristic NMR spectra in the deuterochloroform of τ=9.0 (doublet, J=2), 6.85, 6.70, 6.61, 6.07, 4.89 (quartet, J=2), 1.99-2.88 (multiplet).
Reaction SMILES: [Cl:1][CH2:2][C:3](Cl)=[O:4].[F:6][C@@H:7]1[CH2:11][NH:10][C@H:9]([C:12]#[N:13])[CH2:8]1.C(N(CC)CC)C.S(=O)(=O)(O)[O-].[Na+]>ClCCl>[Cl:1][CH2:2][C:3]([N:10]1[CH2:11][C@@H:7]([F:6])[CH2:8][C@H:9]1[C:12]#[N:13])=[O:4]
Reactant: O=C(Cl)CCl
Reactant: N#C[C@@H]1C[C@H](F)CN1
Agent: O=S(=O)([O-])O
Agent: [Na+]
Solvent: ClCCl
Solvent: CCN(CC)CC
Product: N#C[C@@H]1C[C@H](F)CN1C(=O)CCl
Temperature: 0 °C
Yield: 55.4 %

Procedure:
Chloroacetyl chloride (11.13 g, 98.5 mmol) was dissolved in 120 mL of dichloromethane with stirring under argon atmosphere. Upon cooling to 0° C., (2S,4S)-4-fluoropyrrolidine-2-carbonitrile 13f (11.4 g, 75.7 mmol) was dissolved in 400 mL of dichloromethane followed by addition of triethylamine (16.1 g, 158.97 mmol). To a solution of chloroacetyl chloride in dichloromethane was added the above mentioned mixture in 30 minutes. The reaction mixture was reacted at 0° C. for 2 hours and diluted with 200 mL of ice water and 150 mL of dichloromethane. The separated organic phase was neutralized with saturated sodium bisulfate, washed with 300 mL of water and 300 mL of saturated brine successively, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound (2S,4S)-1-(2-chloroacetyl)-4-fluoropyrrolidine-2-carbonitrile 13g (8 g, yield 60%) as a white crystal.
Reaction SMILES: Br.[NH2:2][C:3]1[C:8]([Cl:9])=[N:7][CH:6]=[CH:5][N:4]=1.Br[CH2:11][CH:12](OCC)OCC.C([O-])([O-])=O.[Na+].[Na+]>CO.O>[Cl:9][C:8]1[C:3]2[N:4]([CH:11]=[CH:12][N:2]=2)[CH:5]=[CH:6][N:7]=1
Reactant: CCOC(CBr)OCC
Reactant: Nc1nccnc1Cl
Agent: Br
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: CO
Solvent: O
Product: Clc1nccn2ccnc12
Temperature: 25 °C
Reaction time: 24 h

Procedure:
HBr (48% in H2O) is added to a solution of 2-amino-3-chloropyrazine (1.2 g, 9.26 mmol) and BrCH2CH(OEt)2 (1.6 mL, 10 mmol) in MeOH and H2O (5 mL and 10 mL) at RT. The mixture is stirred for 24 h at RT and then heated to 40° C. for 48 h. The pH is adjusted to 7 with sat. Na2CO3. The mixture is extracted with CH2Cl2. The organic phase is dried over anhydrous Na2SO4. The product is purified by silica gel column chromatography (4% MeOH in CH2Cl2) to give the title compound as an off white solid.
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12](=[N:19][CH3:20])[CH2:11][CH2:10]2)[CH:5]=[CH:6][C:7]=1[Cl:8].C(OCC)(=O)C.[H][H]>[Ni].ClC1C=CC=CC=1Cl>[CH3:20][NH:19][C@@H:12]1[C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][C:18]=2[C@H:9]([C:4]2[CH:5]=[CH:6][C:7]([Cl:8])=[C:2]([Cl:1])[CH:3]=2)[CH2:10][CH2:11]1
Reactant: [H][H]
Reactant: CN=C1CCC(c2ccc(Cl)c(Cl)c2)c2ccccc21
Agent: [Ni]
Solvent: Clc1ccccc1Cl
Solvent: CCOC(C)=O
Product: CN[C@H]1CC[C@@H](c2ccc(Cl)c(Cl)c2)c2ccccc21
Yield: 0.78 %

Procedure:
N-[4-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)naphthalenylidene]methanamine (Ketimine) (50 g), Ethyl acetate(300 ml), Raney Nickel (0.15 g wet basis) and o-dichlorobenzene (25 ml) are charged into a reaction vessel. The mixture is hydrogenated at 5 to 6 kg/cm2 over pressure of hydrogen for 6 to 7 hrs at about 28 to 30° C. The catalyst is removed by filtration and the cake is washed with 50 ml ethyl acetate. The amount of dehalogenated by product is <0.1%. Sertraline racemate free base thus formed is treated with hydrochloric acid (24 ml, 33%) and predominantly isomer of sertraline HCl racemate is filtered [Cis>98%, trans<2%, dehalogenation product<0.1%, yield 0.78 to 0.80%].
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4]([CH:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12](=[N:19][CH3:20])[CH2:11][CH2:10]2)[CH:5]=[CH:6][C:7]=1[Cl:8].CO.[H][H]>[Ni].C(Cl)Cl>[CH3:20][NH:19][C@@H:12]1[C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][C:18]=2[C@H:9]([C:4]2[CH:5]=[CH:6][C:7]([Cl:8])=[C:2]([Cl:1])[CH:3]=2)[CH2:10][CH2:11]1
Reactant: [H][H]
Reactant: CN=C1CCC(c2ccc(Cl)c(Cl)c2)c2ccccc21
Agent: [Ni]
Solvent: ClCCl
Solvent: CO
Product: CN[C@H]1CC[C@@H](c2ccc(Cl)c(Cl)c2)c2ccccc21
Yield: 0.76 %

Procedure:
N-[4-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)naphthalenylidene]methanamine (Ketimine) (50 g), methanol (300 ml), Raney Nickel (0.15 g wet basis) and DCM (12.5 ml) are charged into a reaction vessel. The mixture is hydrogenated at 5 to 6 kg/cm2 over pressure of hydrogen for 6 to 7 hrs at about 28 to 30° C. The catalyst is removed by filtration and the cake is washed with 50 ml methanol. The amount of dehalogenated by product is <0.1%. Sertraline racemate free base thus formed is treated with hydrochloric acid (24 ml, 33%) and predominantly isomer of sertraline HCl racemate is filtered [Cis>95%, trans<5%, dehalogenation product<0.1%, yield 0.76%].
Reaction SMILES: [CH3:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([N+:10]([O-:12])=[O:11])[C:3]=1[NH2:4].Cl[CH2:14][C:15]([N:17]([CH3:19])[CH3:18])=[O:16]>CN(C=O)C>[CH3:1][C:2]1[CH:8]=[C:7]([CH3:9])[CH:6]=[C:5]([N+:10]([O-:12])=[O:11])[C:3]=1[NH:4][CH2:14][C:15]([N:17]([CH3:19])[CH3:18])=[O:16]
Reactant: CN(C)C(=O)CCl
Reactant: Cc1cc(C)c(N)c([N+](=O)[O-])c1
Solvent: CN(C)C=O
Product: Cc1cc(C)c(NCC(=O)N(C)C)c([N+](=O)[O-])c1
Temperature: 120 °C
Reaction time: 14 h

Procedure:
A mixture of 2,4-dimethyl-6-nitroaniline (5.00 g, 30.1 mmol), 2-chloro-N,N-dimethylacetamide (18.3 g, 150 mmol), K2 CO3 (6.24 g, 45.2 mmol), and KI (499 mg, 3.01 mmol) in DMF (100 mL) was heated at 120° C. for 7 h, then at 130° C. for 14 h. The cooled mixture was quenched with H2O (200 mL) and extracted with CH2 Cl2 (3×150 mL). The combined organic layers were dried over Na2 SO4, filtered, and concentrated under reduced pressure. The crude product was purified by silica gel chromatography, eluting with a gradient of hexane:EtOAc-100:0 to 50:50, to give the title compound. MS: m/z=252 (M+1).
Reaction SMILES: [H-].[Na+].[CH3:3][CH2:4][O:5][C:6]([CH:8](P(OCC)(OCC)=O)[CH3:9])=[O:7].[CH3:18][C:19]1[CH:26]=[CH:25][C:22]([CH:23]=O)=[CH:21][CH:20]=1.O>CN(C)C=O>[CH3:9][C:8](=[CH:23][C:22]1[CH:25]=[CH:26][C:19]([CH3:18])=[CH:20][CH:21]=1)[C:6]([O:5][CH2:4][CH3:3])=[O:7]
Reactant: Cc1ccc(C=O)cc1
Reactant: CCOC(=O)C(C)P(=O)(OCC)OCC
Agent: [H-]
Agent: [Na+]
Solvent: CN(C)C=O
Solvent: O
Product: CCOC(=O)C(C)=Cc1ccc(C)cc1
Reaction time: 1 h
Yield: 90.5 %

Procedure:
To a suspension of sodium hydride (a 60% dispersion in liquid paraffin, 15.0 g, 375 mmol) in N,N-dimethylformamide (160 ml) was added at 0° C. a solution of triethyl 2-phosphonopropionate (87.7 g, 368 mmol) in N,N-dimethylformamide (10 ml) and the resulting mixture was stirred at the same temperature for 1 hour. To the reaction solution was added 4-methylbenzaldehyde (43.3 g, 361 mmol) and the resulting mixture was stirred at room temperature for 1 hour. Water was added into the reaction solution and the product was extracted twice with ethyl acetate. The combined extracts were washed with water, dried on magnesium sulfate, and then concentrated under reduced pressure to obtain 66.7 g (91% yield) of the oily title compound.
Reaction SMILES: [CH2:1]([O:8][C:9]1[C:14](=[O:15])[CH:13]=[C:12]([CH3:16])O[C:10]=1[C:17]([OH:19])=[O:18])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:20]1([NH2:23])[CH2:22][CH2:21]1>CO>[CH2:1]([O:8][C:9]1[C:14](=[O:15])[CH:13]=[C:12]([CH3:16])[N:23]([CH:20]2[CH2:22][CH2:21]2)[C:10]=1[C:17]([OH:19])=[O:18])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
Reactant: NC1CC1
Reactant: Cc1cc(=O)c(OCc2ccccc2)c(C(=O)O)o1
Solvent: CO
Product: Cc1cc(=O)c(OCc2ccccc2)c(C(=O)O)n1C1CC1

Procedure:
To a suspension of 3-(benzyloxy)-6-methyl-4-oxo-4H-pyran-2-carboxylic acid (70 g, 0.27 mol) in MeOH (350 mL) in a 3-necked RBF (round bottom flask) fitted with a mechanical stirrer was added cyclopropylamine (120 mL, 1.72 mol). A clear light yellow solution resulted. The reaction mixture was refluxed for ca. 19 h. Volatiles were removed in vacuo and the residue was dissolved in water (700 mL) with stirring. The aqueous mixture was filtered through a pad of Celite®. The filtrate was placed in a 3-necked RBF fitted with a mechanical stirrer, and cooled in an ice bath. Conc. HCl was added until the pH was ca. 1-2, and voluminous “orange” solid precipitated out. Acetone (200 mL) was added to the suspension. The solid was then collected by suction filtration, thoroughly washed with acetone, and air-dried. The title compound was obtained as an off-white solid (71.0 g, 88%). Mp: 139.0-139.5° C.; 1H-NMR (300 MHz, DMSO-D6) δ (ppm): 0.98-1.15 (m, 4H, 2 c-CH2), [2.37 (s)+2.40 (s), rotamers, 3/2 ratio, 3H, CH3)], 3.30-3.50 (m, 1H, c-CH), 5.00-5.05 (m, 2H, CH2Ph), 6.20-6.25 (m, 1H, C═CH), 7.28-7.50 (m, 5H, Ph); MS (m/z): 300.2 (M++1), 256.2, 192.2, 164.4, 91.0 (100%); Anal. Calcd. for C17H17NO4: C, 68.21; H, 5.72; N, 4.68%. Found: C, 67.76; H, 5.76; N, 4.61%.
Reaction SMILES: Cl.[C:2]1([CH3:10])[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[NH:8][NH2:9].[CH3:11][C:12]([CH3:19])([CH3:18])[C:13](=O)[CH2:14][C:15]#[N:16].CCN(CC)CC>C1(C)C=CC=CC=1>[C:12]([C:13]1[CH:14]=[C:15]([NH2:16])[N:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[CH3:10])[N:9]=1)([CH3:19])([CH3:18])[CH3:11]
Reactant: CC(C)(C)C(=O)CC#N
Reactant: Cc1ccccc1NN
Agent: Cl
Solvent: Cc1ccccc1
Solvent: CCN(CC)CC
Product: Cc1ccccc1-n1nc(C(C)(C)C)cc1N
Reaction time: 0.25 h

Procedure:
A solution of o-tolyl-hydrazine hydrochloride (0.3 mmol) in 0.5 mL of toluene with 4,4-dimethyl-3-oxopentanenitrile (375 mg, 3 mmol, 10 equiv) and Et3N (84 μL, 0.6 mmol, 2 equiv) is stirred at 110° C. overnight. The solvent is evaporated and the residue taken up in EtOAC and washed with saturated NaHCO3 and brine. The organic layer is then concentrated and the residue diluted in 1 mL of ethanol and 1 mL of 1M HCl. The mixture was left at rt for 15 min and then it was concentrated. 5-tert-Butyl-2-o-tolyl-2H-pyrazol-3-ylamine is used crude in the preparation of Example 34.
Reaction SMILES: [C:1]([NH:4][C:5]1[CH:10]=[CH:9][C:8]([S:11](Cl)(=[O:13])=[O:12])=[CH:7][CH:6]=1)(=[O:3])[CH3:2].[N-:15]=[N+:16]=[N-:17].[Na+]>O>[C:1]([NH:4][C:5]1[CH:10]=[CH:9][C:8]([S:11]([N:15]=[N+:16]=[N-:17])(=[O:13])=[O:12])=[CH:7][CH:6]=1)(=[O:3])[CH3:2]
Reactant: [N-]=[N+]=[N-]
Reactant: CC(=O)Nc1ccc(S(=O)(=O)Cl)cc1
Agent: [Na+]
Solvent: O
Product: CC(=O)Nc1ccc(S(=O)(=O)N=[N+]=[N-])cc1
Reaction time: 18 h

Procedure:
233.5 g 4-acetylaminobenzenesulfonic acid chloride (approximately 1 mol) are added in cold condition (at 2° to 3° C.) and while being stirred into a solution of 70 g sodium azide (approximately 1 mol) in 800 g water. Subsequently, stirring is continued for 18 hours at room temperature and then the temperature is held at 40° C. for one hour; finally, aspiration is applied and washing with excess water follows. A brown substance is obtained.
Reaction SMILES: [F:1][C:2]1[CH:8]=[CH:7][CH:6]=[CH:5][C:3]=1[NH2:4].[Cl:9][CH2:10][CH2:11][C:12](Cl)=[O:13]>O1CCCC1.N1C=CC=CC=1.O>[Cl:9][CH2:10][CH2:11][C:12]([NH:4][C:3]1[CH:5]=[CH:6][CH:7]=[CH:8][C:2]=1[F:1])=[O:13]
Reactant: O=C(Cl)CCCl
Reactant: Nc1ccccc1F
Solvent: O
Solvent: C1CCOC1
Solvent: c1ccncc1
Product: O=C(CCCl)Nc1ccccc1F
Temperature: 25 °C
Reaction time: 18 h

Procedure:
A solution of 2-fluoroaniline (20.00 g, 180.0 mmol) in tetrahydrofurane (100 mL) and pyridine (22 mL) was stirred for 15 min and then 3-chloropropionyl chloride (25.14 g, 198 mmol) in tetrahydrofurane (50 ml) was added at 0° C. The mixture was stirred for 18 h at room temperature under inert atmosphere. After the completion of the reaction, the mixture was diluted with water. The aqueous layer was separated and extracted with diethylether. The collected organic parts were washed with water and brine and were then dried over Na2SO4, filtered and concentrated under vacuum to afford the title compound as a white solid. This intermediate was used directly in the next step without further purification and characterization.
Reaction SMILES: [CH3:1][N:2]1[CH2:7][CH2:6][C:5](=[C:8]2[C:14]3[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=3[CH:12]=[C:11](Br)[C:10]3[CH:20]=[CH:21][CH:22]=[CH:23][C:9]2=3)[CH2:4][CH2:3]1.CC(C)([O-])C.[K+].[NH:30]1[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]1>C(O)(C)(C)C>[CH3:1][N:2]1[CH2:7][CH2:6][C:5](=[C:8]2[C:14]3[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=3[CH:12]=[C:11]([N:30]3[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]3)[C:10]3[CH:20]=[CH:21][CH:22]=[CH:23][C:9]2=3)[CH2:4][CH2:3]1
Reactant: CN1CCC(=C2c3ccccc3C=C(Br)c3ccccc32)CC1
Reactant: C1CCNCC1
Agent: CC(C)(C)[O-]
Agent: [K+]
Solvent: CC(C)(C)O
Product: CN1CCC(=C2c3ccccc3C=C(N3CCCCC3)c3ccccc32)CC1

Procedure:
1-Methyl-4-(10-bromo-5H-dibenzo[a,d]cyclohepten-5-ylidene)-piperidine, 2.87 g. (0.0079 mole), 50 ml. of a 0.4M solution of potassium t-butoxide in t-butanol, and 20 ml. of dry piperidine is stirred and refluxed under anhydrous conditions for 6 hours. The reaction mixture is cooled and partitioned between 350 ml. of benzene and 50 ml. of water. The benzene layer is then extracted 5 more times with 50 ml. each of water. The benzene layer is then dried over anhydrous MgSO4, filtered, and the benzene evaporated. This gives a single spot on t.l.c. and is used directly in the next step.
Reaction SMILES: [Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[C:10]([C:20]([OH:22])=O)=[CH:11][C:12]3[N:16]([CH3:17])[CH:15]=[N:14][C:13]=3[C:18]=2[F:19])=[C:4]([Cl:23])[CH:3]=1.[CH:24]([O:26][CH2:27][CH2:28][O:29][NH2:30])=[CH2:25].C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C.CCN=C=NCCCN(C)C>CN(C)C=O.C(OCC)(=O)C>[CH:24]([O:26][CH2:27][CH2:28][O:29][NH:30][C:20]([C:10]1[C:9]([NH:8][C:5]2[CH:6]=[CH:7][C:2]([Br:1])=[CH:3][C:4]=2[Cl:23])=[C:18]([F:19])[C:13]2[N:14]=[CH:15][N:16]([CH3:17])[C:12]=2[CH:11]=1)=[O:22])=[CH2:25]
Reactant: Cn1cnc2c(F)c(Nc3ccc(Br)cc3Cl)c(C(=O)O)cc21
Reactant: C=COCCON
Agent: CCN=C=NCCCN(C)C
Agent: On1nnc2ccccc21
Solvent: CN(C)C=O
Solvent: CCOC(C)=O
Solvent: CCN(CC)CC
Product: C=COCCONC(=O)c1cc2c(ncn2C)c(F)c1Nc1ccc(Br)cc1Cl
Temperature: 25 °C
Reaction time: 48 h
Yield: 90.1 %

Procedure:
6-(4-Bromo-2-chloro-phenylamino)-7-fluoro-3-methyl-3H-benzoimidazole-5-carboxylic acid 10c (2.00 g, 5.0 mmol), O-(2-vinyloxy-ethyl)-hydroxylamine (0.776 g, 7.5 mmol), HOBt (0.88 g, 6.5 mmol), triethylamine (1.61 mL, 2.3 mmol) and EDCI (1.3 g, 6.5 mmol) are dissolved in dimethylformamide (52 mL) and stirred at room temperature for 48 hours. The reaction mixture is diluted with ethyl acetate, washed with water (3×), saturated potassium carbonate (2×), saturated ammonium chloride (2×), brine, dried (Na2SO4) and concentrated under reduced pressure to an off-white solid. Trituration of the solid with diethyl ether provides 2.18 g (90%) desired product as an off-white solid. MS ESI (+) m/z 483, 485 (M+ Br pattern) detected.
Reaction SMILES: [N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][N:2]=1.CC1CCCN(C)C1(C)C.[Li].[O:18]1[C:22]2([CH2:27][CH2:26][C:25](=[O:28])[CH2:24][CH2:23]2)[O:21][CH2:20][CH2:19]1>C1COCC1>[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:25]2([OH:28])[CH2:26][CH2:27][C:22]3([O:21][CH2:20][CH2:19][O:18]3)[CH2:23][CH2:24]2)[N:2]=1
Reactant: c1ccnnc1
Reactant: O=C1CCC2(CC1)OCCO2
Agent: CC1CCCN(C)C1(C)C
Agent: [Li]
Solvent: C1CCOC1
Product: OC1(c2cccnn2)CCC2(CC1)OCCO2
Temperature: 25 °C
Reaction time: 0.1 h
Yield: 44 %

Procedure:
To a solution of pyridazine (17.7 mmol, 1.28 mL) in THF (60 mL) was added 2,2,6,6, lithium tetramethylpiperidine (71 mmol, 10 g) at −78° C. The reaction was then stirred for 6 min and 1,4-dioxa-spiro[4.5]decan-8-one (71 mmol, 11 g) was added. The reaction was stirred for 5 h at −78° C. at which point the reaction was quenched using a solution of ethanol, hydrochloric acid and THF (30 mL, 1:1:1). The reaction was allowed to warm to ambient temperature and the reaction mixture was extracted using EtOAc. The organic layers were combined and dried over MgSO4. The residue was then purified using flash chromatography to afford the desired alcohol (44%, 1.84 g). MS [M+H]+ 237.1.
Reaction SMILES: [CH3:1][O:2][C:3]1[CH:8]=[C:7]([CH:9]=[O:10])[CH:6]=[CH:5][C:4]=1[OH:11].C(=O)([O-])[O-].[K+].[K+].[CH3:18][O:19][CH2:20]Cl>C(C1C=CC=CC=1)(=O)C>[CH3:1][O:2][C:3]1[CH:8]=[C:7]([CH:6]=[CH:5][C:4]=1[O:11][CH2:18][O:19][CH3:20])[CH:9]=[O:10]
Reactant: COCCl
Reactant: COc1cc(C=O)ccc1O
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CC(=O)c1ccccc1
Product: COCOc1ccc(C=O)cc1OC
Temperature: 25 °C
Yield: 53.1 %

Procedure:
To 14.0 g of vaniline and 51.0 g of potassium carbonate was added 280 ml of acetophenone, and chloromethyl methyl ether was further added and the mixture was refluxed for 1 hour. The reaction liquid was cooled to room temperature and filtered, and the filtrate was concentrated under reduced pressure. The reaction mixture was dissolved in ether, washed with water, shaken with a saturated aqueous solution of sodium chloride, dried with anhydrous sodium sulfate and concentrated under reduced pressure. The concentrate was subjected to the column chromatography [230-400 mesh Kieselgel; eluting solvent=hexane/ethyl acetate (2/1)] to obtain 9.6 g (yield=53.1%) of 3-methoxy-4-methoxymethoxybenzaldehyde.