Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: ClC(OCC)=O.[C:7]([C:11]1[CH:19]=[CH:18][C:14]([C:15](O)=[O:16])=[CH:13][C:12]=1[N+:20]([O-:22])=[O:21])([CH3:10])([CH3:9])[CH3:8].C(N(CC)CC)C.[BH4-].[Na+]>O1CCCC1.O.CCCCCC.C(OCC)(=O)C>[C:7]([C:11]1[CH:19]=[CH:18][C:14]([CH2:15][OH:16])=[CH:13][C:12]=1[N+:20]([O-:22])=[O:21])([CH3:10])([CH3:8])[CH3:9]
Reactant: CC(C)(C)c1ccc(C(=O)O)cc1[N+](=O)[O-]
Agent: CCOC(=O)Cl
Agent: [BH4-]
Agent: [Na+]
Solvent: CCN(CC)CC
Solvent: CCOC(C)=O
Solvent: CCCCCC
Product: CC(C)(C)c1ccc(CO)cc1[N+](=O)[O-]
Reaction time: 0.75 h
Yield: 93.1 %

Procedure:
A solution of 3.12 g (28.8 mmol) of ethyl chloroformate in 10 ml of tetrahydrofuran was added dropwise to a solution of 6.0 g (26.9 mmol) of 4-t-butyl-3-nitrobenzoic acid and 3.12 g (30.9 mmol) of triethylamine in 60 ml of tetrahydrofuran over a period of 10 minutes, whilst ice-cooling, and the resulting mixture was then stirred at the same temperature for 45 minutes. At the end of this time, the reaction mixture was filtered using a Celite (trade mark) filter aid, and the precipitates were washed with tetrahydrofuran. A combined solution of the filtrate and the washings was added dropwise to a solution of 3.76 g. (99.5 mmol) of sodium borohydride in a mixture of 40 ml of tetrahydrofuran and 40 ml of water, whilst ice-cooling, over a period of 25 minutes, and the mixture was stirred at the same temperature for 2 hours. At the end of this time, the reaction mixture was freed from the tetrahydrofuran by evaporation under reduced pressure . The resulting residue was partitioned between diethyl ether and water, and the aqueous layer was extracted with diethyl ether. The combined organic layers were washed twice with water and once with a saturated aqueous solution of sodium chloride. The solvent was then removed by distillation under reduced pressure, and the resulting residue was purified by column chromatography through 100 g of silica gel, using a gradient elution method, with mixtures of ethyl acetate and hexane ranging from 20:80 to 30:70 by volume as the eluent, to give 5.24 g (yield 93%) of the title compound as an oily substance.
Reaction SMILES: [CH:1]1([Mg]Br)[CH2:3][CH2:2]1.[Cl:6][C:7]1[CH:8]=[CH:9][C:10]([CH:31]=[O:32])=[C:11]2[C:15]=1[N:14]=[C:13]1[N:16]([C:20]3[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=3[C:27]([F:30])([F:29])[F:28])[CH2:17][CH2:18][CH2:19][N:12]21>O1CCCC1>[Cl:6][C:7]1[C:15]2[N:14]=[C:13]3[N:16]([C:20]4[CH:25]=[CH:24][C:23]([Cl:26])=[CH:22][C:21]=4[C:27]([F:28])([F:30])[F:29])[CH2:17][CH2:18][CH2:19][N:12]3[C:11]=2[C:10]([CH:31]([CH:1]2[CH2:3][CH2:2]2)[OH:32])=[CH:9][CH:8]=1
Reactant: O=Cc1ccc(Cl)c2nc3n(c12)CCCN3c1ccc(Cl)cc1C(F)(F)F
Reactant: Br[Mg]C1CC1
Solvent: C1CCOC1
Product: OC(c1ccc(Cl)c2nc3n(c12)CCCN3c1ccc(Cl)cc1C(F)(F)F)C1CC1
Temperature: 25 °C
Reaction time: 1 h
Yield: 51.5 %

Procedure:
Cyclopropylmagnesium bromide (1.0 M solution in tetrahydrofuran, 2.9 mL, 2.9 mmol) was added to a stirred solution of 9-chloro-1-[4-chloro-2-(trifluoromethyl)phenyl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carbaldehyde (1.00 g, 2.41 mmol) in tetrahydrofuran (10 mL) at 0° C., and the mixture was stirred at room temperature for 1 hr. The reaction was quenched by aqueous saturated ammonium chloride, and the mixture was extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The residue was recrystallized from ethyl acetate to give the title compound as a colorless crystal (567 mg, 1.24 mmol, 51%).
Reaction SMILES: [F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C:12]3[C:13]([CH3:20])=[C:14]([NH2:19])[C:15]([CH3:18])=[C:16]([CH3:17])[C:11]=3[O:10][C:9]2([CH3:22])[CH3:21])=[CH:4][CH:3]=1.C([O:26][CH2:27][CH3:28])(=O)C>>[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C:12]3[C:13]([CH3:20])=[C:14]([N:19]4[C:9](=[O:10])[C:8]5[C:28](=[CH:2][CH:3]=[CH:4][CH:5]=5)[C:27]4=[O:26])[C:15]([CH3:18])=[C:16]([CH3:17])[C:11]=3[O:10][C:9]2([CH3:22])[CH3:21])=[CH:4][CH:3]=1
Reactant: Cc1c(C)c2c(c(C)c1N)C(c1ccc(F)cc1)C(C)(C)O2
Reactant: CCOC(C)=O
Product: Cc1c(C)c(N2C(=O)c3ccccc3C2=O)c(C)c2c1OC(C)(C)C2c1ccc(F)cc1
Yield: 72 %

Procedure:
By using 3-(4-fluorophenyl)-2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-amine, the title compound was synthesized according to Reference Example 35a. Yield: 72%. Melting point: 209-211° C. (Ethyl acetate).
Reaction SMILES: Br[C:2]1[CH:7]=[CH:6][N:5]=[C:4]([O:8]C)[CH:3]=1.[CH3:10][S:11][C:12]1[CH:17]=[CH:16][C:15](B(O)O)=[CH:14][CH:13]=1.C([O-])([O-])=O.[K+].[K+]>CS(C)=O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:10][S:11][C:12]1[CH:17]=[CH:16][C:15]([C:2]2[CH:7]=[CH:6][NH:5][C:4](=[O:8])[CH:3]=2)=[CH:14][CH:13]=1
Reactant: COc1cc(Br)ccn1
Reactant: CSc1ccc(B(O)O)cc1
Agent: Cl[Pd]Cl
Agent: [Fe+2]
Agent: O=C([O-])[O-]
Solvent: CS(C)=O
Product: CSc1ccc(-c2cc[nH]c(=O)c2)cc1
Temperature: 95 °C
Reaction time: 16 h
Yield: 77.8 %

Procedure:
A suspension of 4-bromo-2-methoxypyridine (1.225 g, 6.511 mmol), 4-methylthiophenyl boronic acid (2.188 g, 13.02 mmol), PdCl2(dppf) (531 mg, 0.651 mmol) and K2CO3 (1.797 g, 13.02 mmol) in DMSO (10 mL) was degassed under reduced pressure for 25 min. The suspension was put under N2 and stirred at 95° C. for 16 h. The suspension was cooled, H2O was added, and the suspension was filtered to afford a light colored solid. Flash chromatography (silica gel, hexanes/(1:1 EtOAc/hexanes), 100:0 to 0:100) afforded 1.10 g of a white powder. The white powder was diluted with concentrated HCl solution (50 mL) and stirred at reflux for 24 h. The reaction was cooled and concentrated under reduced pressure. The residue was neutralized with saturated NaHCO3 solution, and the solid was collected by filtration. The solid was washed with H2O to afford the title compound (1.103 g, 71%) as a tan solid: 1H NMR (300 MHz, DMSO-d6) δ 7.65 (d, J=8.4 Hz, 2H), 7.43 (d, J=6.9 Hz, 1H), 7.34 (d, J=8.4 Hz, 2H), 6.57 (d, J=1.7 Hz, 1H), 6.50 (dd, J=6.9, 1.7 Hz, 1H), 3.34 (s, 3H).
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4]([OH:23])[CH:5]=[CH:6][C:7]=1[CH:8]([CH3:22])[C:9]([OH:21])([C:14]1[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[CH:15]=1)[C:10]([F:13])([F:12])[F:11].[CH3:24][O:25][C:26](=[O:37])[C:27]1[CH:32]=[CH:31][C:30]([CH2:33]Br)=[C:29]([O:35][CH3:36])[CH:28]=1>>[CH3:24][O:25][C:26](=[O:37])[C:27]1[CH:32]=[CH:31][C:30]([CH2:33][O:23][C:4]2[CH:5]=[CH:6][C:7]([CH:8]([CH3:22])[C:9]([OH:21])([C:14]3[CH:19]=[CH:18][N:17]=[C:16]([CH3:20])[CH:15]=3)[C:10]([F:13])([F:11])[F:12])=[C:2]([Cl:1])[CH:3]=2)=[C:29]([O:35][CH3:36])[CH:28]=1
Reactant: COC(=O)c1ccc(CBr)c(OC)c1
Reactant: Cc1cc(C(O)(C(C)c2ccc(O)cc2Cl)C(F)(F)F)ccn1
Product: COC(=O)c1ccc(COc2ccc(C(C)C(O)(c3ccnc(C)c3)C(F)(F)F)c(Cl)c2)c(OC)c1

Procedure:
The title compound was prepared in analogy to Example 93, step 7 from 3-chloro-4-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(2-methyl-pyridin-4-yl)-propyl]-phenol (obtained in Example 93, step 6) by alkylation with methyl-4-(bromomethyl)-3-methoxybenzoate [CAS Reg. No. 70264-94-7]. MS (m/e)=524.0 [MH+].
Reaction SMILES: [Br:1][C:2]1[CH:3]=[N:4][C:5]2[N:6]([N:8]=[C:9]([C:11]([OH:13])=O)[CH:10]=2)[CH:7]=1.[CH3:14][CH:15]1[NH:24][CH2:23][CH2:22][C:21]2[N:20]=[CH:19][CH:18]=[CH:17][C:16]1=2>>[Br:1][C:2]1[CH:3]=[N:4][C:5]2[N:6]([N:8]=[C:9]([C:11]([N:24]3[CH2:23][CH2:22][C:21]4[N:20]=[CH:19][CH:18]=[CH:17][C:16]=4[CH:15]3[CH3:14])=[O:13])[CH:10]=2)[CH:7]=1
Reactant: CC1NCCc2ncccc21
Reactant: O=C(O)c1cc2ncc(Br)cn2n1
Product: CC1c2cccnc2CCN1C(=O)c1cc2ncc(Br)cn2n1

Procedure:
In close analogy to the procedure described in Example 1, 6-bromo-pyrazolo[1,5-a]pyrimidine-2-carboxylic acid is reacted with 5-methyl-5,6,7,8-tetrahydro-[1,6]naphthyridine to provide the title compound in moderate yield.
Reaction SMILES: C[O:2][C:3](=[O:28])[CH2:4][C:5]1[CH:10]=[CH:9][C:8]([C:11]#[C:12][C:13]2[CH:14]=[C:15]3[C:20](=[CH:21][CH:22]=2)[CH2:19][N:18]([CH:23]2[CH2:25][CH2:24]2)[CH2:17][C:16]3([CH3:27])[CH3:26])=[CH:7][CH:6]=1.CO.O1CCCC1.O.[OH-].[Li+]>O>[CH:23]1([N:18]2[CH2:17][C:16]([CH3:26])([CH3:27])[C:15]3[C:20](=[CH:21][CH:22]=[C:13]([C:12]#[C:11][C:8]4[CH:7]=[CH:6][C:5]([CH2:4][C:3]([OH:28])=[O:2])=[CH:10][CH:9]=4)[CH:14]=3)[CH2:19]2)[CH2:24][CH2:25]1
Reactant: COC(=O)Cc1ccc(C#Cc2ccc3c(c2)C(C)(C)CN(C2CC2)C3)cc1
Agent: [Li+]
Agent: [OH-]
Solvent: C1CCOC1
Solvent: CO
Solvent: O
Product: CC1(C)CN(C2CC2)Cc2ccc(C#Cc3ccc(CC(=O)O)cc3)cc21

Procedure:
Following general procedure J and using [4-(2-cyclopropyl-4,4-dimethyl-1,2,3,4-tetrahydro-isoquinolin-6ylethynyl)-phenyl]-acetic acid methyl ester (Compound 23, 0.01 g, 0.027 mmol), methanol (1 mL), tetrahydrofuran (1 mL), water (0.5 mL) and lithium hydroxide monohydrate (0.042 g, 1 mmol) the title compound was-obtained as a pale yellow solid foam (0.0065 g, 68%).
Reaction SMILES: [Si:1]([O:8][CH2:9][CH2:10][C:11]1[N:12]([CH3:25])[C:13]2[C:18]([CH:19]=1)=[CH:17][C:16]([C:20](=O)[CH2:21][CH2:22][CH3:23])=[CH:15][CH:14]=2)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:26][O:27][C:28]1[CH:35]=[C:34]([O:36][CH3:37])[CH:33]=[CH:32][C:29]=1[CH2:30][NH2:31].CCN(CC)CC>C(Cl)Cl.Cl[Ti](Cl)(Cl)Cl>[Si:1]([O:8][CH2:9][CH2:10][C:11]1[N:12]([CH3:25])[C:13]2[C:18]([CH:19]=1)=[CH:17][C:16]([C:20](=[N:31][CH2:30][C:29]1[CH:32]=[CH:33][C:34]([O:36][CH3:37])=[CH:35][C:28]=1[O:27][CH3:26])[CH2:21][CH2:22][CH3:23])=[CH:15][CH:14]=2)([C:4]([CH3:5])([CH3:7])[CH3:6])([CH3:3])[CH3:2]
Reactant: CCCC(=O)c1ccc2c(c1)cc(CCO[Si](C)(C)C(C)(C)C)n2C
Reactant: COc1ccc(CN)c(OC)c1
Agent: Cl[Ti](Cl)(Cl)Cl
Solvent: ClCCl
Solvent: CCN(CC)CC
Product: CCCC(=NCc1ccc(OC)cc1OC)c1ccc2c(c1)cc(CCO[Si](C)(C)C(C)(C)C)n2C
Temperature: 25 °C
Reaction time: 8 h

Procedure:
To solution of 1-(2-(2-(tert-butyldimethylsilyloxy)ethyl)-1-methyl-1H-indol-5-yl)butan-1-one (6.62 g, 18.41 mmol) in DCM (35 mL) was added 2,4-dimethoxybenzylamine (3.20 mL, 21.30 mmol) and NEt3 (7.0 mL, 50.22 mmol). Mixture was cooled to 0° C. before TiCl4 solution (1M DCM, 12.0 mL, 12.0 mmol) was added dropwise via syringe pump over 30 min. Reaction was allowed to warm to room temperature and stirred overnight. Mixture was diluted with DCM (100 mL) and then quenched with NaHCO3 (aqueous saturated, ˜30 mL). Upon vigorous shaking organic phase was separated using PTFE phase separator and dried over Na2SO4. Removal of the solvent afforded N-(1-(2-(2-(tert-butyldimethylsilyloxy)ethyl)-1-methyl-1H-indol-5-yl)butylidene)-1-(2,4-dimethoxyphenyl)methanamine as yellow oil, which was taken directly into next step without purification.
Reaction SMILES: CN(C)C=O.[F:6][C:7]([F:19])([F:18])[C:8]1[CH:9]=[C:10]([CH:14](O)[CH:15]=[CH2:16])[CH:11]=[CH:12][CH:13]=1.S(Cl)([Cl:22])=O>ClCCl>[Cl:22][CH:14]([C:10]1[CH:11]=[CH:12][CH:13]=[C:8]([C:7]([F:19])([F:18])[F:6])[CH:9]=1)[CH:15]=[CH2:16]
Reactant: O=S(Cl)Cl
Reactant: C=CC(O)c1cccc(C(F)(F)F)c1
Solvent: ClCCl
Solvent: CN(C)C=O
Product: C=CC(Cl)c1cccc(C(F)(F)F)c1
Temperature: 25 °C
Reaction time: 0.12 h

Procedure:
Dimethylformamide (5 mL) was added to a solution of 1-[3-(trifluoromethyl)phenyl]prop-2-en-1-ol (50 g) in dichloromethane (500 mL) at 0 to 5° C. The reaction mixture was stirred for 5-10 min at room temperature. The reaction mixture was cooled at 0 to 5° C. and thionyl chloride (44.26 g) was added slowly maintaining the temperature at 0 to 5° C. The reaction mixture was stirred at 0 to 5° C. for 1-2 hours. After completion of the reaction, the mixture was quenched slowly with ice-chilled de-ionized water (250 mL) at 0-10° C. and stirred for additional 30 minutes at 0 to 5° C. Organic Layer was separated, washed twice with a solution of sodium chloride (10%; 250 mL) and concentrated under vacuum at 40° C. to 45° C. to give 1-(1-chloroprop-2-en-1-yl)-3-(trifluoromethyl)benzene.
Reaction SMILES: [OH:1][CH2:2][C@H:3]([NH:5][C@@H:6]([CH3:17])[C@@H:7]([C:9]1[CH:14]=[C:13]([F:15])[CH:12]=[C:11]([F:16])[CH:10]=1)[OH:8])[CH3:4].[CH:18]1[CH:19]=[C:20]([CH2:23][NH:24][C:25]2[C:30]([C:31](O)=[O:32])=[CH:29][C:28]([S:34]([NH2:37])(=[O:36])=[O:35])=[C:27]([Cl:38])[CH:26]=2)[O:21][CH:22]=1.C1(C)C=CC(S(O)(=O)=O)=CC=1>O.C1C=CC=CC=1.C1(C)C=CC=CC=1>[NH2:37][S:34]([C:28]1[C:27]([Cl:38])=[CH:26][C:25]([NH:24][CH2:23][C:20]2[O:21][CH:22]=[CH:18][CH:19]=2)=[C:30]([CH:29]=1)[C:31]([O:1][CH2:2][C@H:3]([NH:5][C@H:6]([CH3:17])[C@H:7]([C:9]1[CH:10]=[C:11]([F:16])[CH:12]=[C:13]([F:15])[CH:14]=1)[OH:8])[CH3:4])=[O:32])(=[O:35])=[O:36]
Reactant: NS(=O)(=O)c1cc(C(=O)O)c(NCc2ccco2)cc1Cl
Reactant: C[C@H](CO)N[C@@H](C)[C@H](O)c1cc(F)cc(F)c1
Agent: Cc1ccc(S(=O)(=O)O)cc1
Solvent: O
Solvent: Cc1ccccc1
Solvent: c1ccccc1
Product: C[C@H](COC(=O)c1cc(S(N)(=O)=O)c(Cl)cc1NCc1ccco1)N[C@H](C)[C@@H](O)c1cc(F)cc(F)c1

Procedure:
The free base of (rac)-(R*,S*)-2-((2-hydroxy-(R)-1-methylethyl)amino)-1-(3,5-difluorophenyl)propanol (21) (0.023 mole) and benzene (30 mL) (or toluene) is added to a round-bottomed flask. Furosemide (5-(aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoic acid (10), (Aldrich) (0.025 mole), benzene (30 mL), and p-toluenesulfonic acid (0.026 mole) catalyst is added to the flask. A Dean-Stark trap is filled with benzene, and the contents of the flask is refluxed with stirring for several hours or until no additional water is collected in the trap. The reaction is cooled, extracted with sodium bicarbonate solution, washed with water, and then with a saturated sodium chloride solution. The organic layer is dried over sodium sulfate, filtered and concentrated in vacuo to give crude product, which may be purified by column chromatography on silica gel with hexanes/ethyl acetate as eluent. The fractions that contain pure product may be combined and spin evaporated in vacuo to give a solid that may be recrystallized to give (rac)-(R*,S*)-2-((2-(3,5-difluorophenyl)-2-hydroxy-1-methylethyl)amino)-(R)-2-methylethyl 5-(aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoate (210). [See eg., Sandier et al., Organic Functional Group Preparations, p. 249 (1968)]
Reaction SMILES: [Cl:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5]([N:9]2[CH2:14][CH2:13][N:12]([CH3:15])[CH2:11][CH2:10]2)=[CH:4][C:3]=1[CH2:16][C:17]([NH2:19])=[O:18].[NH:20]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[C:22]([C:29](=O)[C:30]([O-])=[O:31])=[CH:21]1.C(O[K])(C)(C)C>C1COCC1.CCOC(C)=O>[Cl:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5]([N:9]2[CH2:10][CH2:11][N:12]([CH3:15])[CH2:13][CH2:14]2)=[CH:4][C:3]=1[C:16]1[C:17](=[O:18])[NH:19][C:30](=[O:31])[C:29]=1[C:22]1[C:23]2[C:28](=[CH:27][CH:26]=[CH:25][CH:24]=2)[NH:20][CH:21]=1
Reactant: Cc1cc(N2CCN(C)CC2)cc(CC(N)=O)c1Cl
Reactant: O=C([O-])C(=O)c1c[nH]c2ccccc12
Agent: CC(C)(C)O[K]
Solvent: C1CCOC1
Solvent: CCOC(C)=O
Product: Cc1cc(N2CCN(C)CC2)cc(C2=C(c3c[nH]c4ccccc34)C(=O)NC2=O)c1Cl
Temperature: 35 °C
Reaction time: 8 h

Procedure:
2-[2-Chloro-3-methyl-5-(4-methyl-piperazin-1-yl)-phenyl]-acetamide (211 mg, 0.75 mmol) and 3-indoleglyoxylate (270 mg, 1.35 mmol) are dissolved in THF (5 mL). A solution of 1.0 M tert-BuOK in THF (2.98 mL, 4 eq) is added and the mixture is stirred at 35° C. overnight. The reaction is diluted with AcOEt (20 mL) and washed with H2O (20 mL) and brine (10 mL). The organic phase is dried over Na2SO4 and the solvent is evaporated. The residue is purified by FCC (AcOEt/AcOH/H2O 7:1:1) to afford the title compound in the form of its acetate salt. 1H NMR (DMSO, 400 MHz) δ 2.16 (s, 3H), 2.31 (s, 3H), 2.32-2.38 (m, 4H), 2.97-3.10 (m, 4H), 6.61 (d, J=8.0 Hz, 1H), 6.71-6.77 (m, 2H), 7.04 (d, J=2.8 Hz, 1H), 7.08 (dd, J=7.4, 7.2 Hz, 1H), 7.41 (d, J=8.2 Hz, 1H), 7.98 (d, J=1.5 Hz, 1H), 11.05 (br s, 1H), 11.90 (br s, 1H); ES-MS: 435 [M+H]+.
Reaction SMILES: [Br:1][C:2]1[N:3]=[C:4]([Si](C(C)C)(C(C)C)C(C)C)[O:5][C:6]=1[CH:7]=[O:8].[C-]#N.[Na+].[CH3:22][OH:23]>[O-2].[O-2].[Mn+4]>[CH3:22][O:23][C:7]([C:6]1[O:5][CH:4]=[N:3][C:2]=1[Br:1])=[O:8]
Reactant: CO
Reactant: CC(C)[Si](c1nc(Br)c(C=O)o1)(C(C)C)C(C)C
Agent: [Mn+4]
Agent: [C-]#N
Agent: [Na+]
Product: COC(=O)c1ocnc1Br
Temperature: 25 °C
Reaction time: 8 h

Procedure:
To a mixture of 4-bromo-2-triisopropylsilanyloxazole-5-carboaldehyde (1.94 g) and methanol (40 mL) there were added sodium cyanide (1.43 g) and manganese dioxide (10.2 g) in that order, and the mixture was stirred overnight at room temperature. The mixture was filtered through Celite, the Celite was washed with ethyl acetate (200 mL), and the washed solution was combined with the filtrate. After sufficiently shaking the mixture, the organic layer was separated off and washed with a 1N aqueous sodium hydroxide solution (200 mL), and then dried over anhydrous magnesium sulfate. The mixture was filtered to obtain a filtrate, and the solvent in the filtrate was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate-heptane mixture) to obtain the target compound (0.435 g) as a colorless solid.
Reaction SMILES: [Br:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][CH2:10][C:11](O)=[O:12])[CH:5]=[CH:6][CH:7]=1.[H]1[BH2][H][BH2]1.C1COCC1.[OH-].[Na+]>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][CH2:10][CH2:11][OH:12])[CH:5]=[CH:6][CH:7]=1
Reactant: O=C(O)CCCc1cccc(Br)c1
Agent: [Na+]
Agent: [OH-]
Solvent: C1CCOC1
Product: OCCCCc1cccc(Br)c1
Temperature: 25 °C
Reaction time: 18 h
Yield: 70 %

Procedure:
A cold (0° C.) solution of 4-(3-bromophenyl)butyric acid (2.85 g, 11.7 mmol) in THF was treated slowly with a solution of B2H6-THF (35 mL), stirred at room temperature for 18 hours, poured into ice/water, basified with 2.5 N NaOH to pH=11 and extracted with CH2Cl2. The extracts were combined, washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the resultant residue by column chromatography using hexanes/CH2Cl2/MeOH (4/4.5/0.5) as the eluting solvent afforded 4-(3-bromophenyl)butan-1-ol as a colorless oil (1.9 g, 70% yield.
Reaction SMILES: [O:1]1[CH:5]=[CH:4][C:3]([C:6]([NH:8][C:9]2[CH:10]=[CH:11][C:12]([CH3:24])=[C:13]([C:15]3[CH:20]=[CH:19][C:18]([C:21](O)=[O:22])=[CH:17][CH:16]=3)[CH:14]=2)=[O:7])=[CH:2]1.[C:25]([O:29][C:30]([N:32]1[CH2:37][CH2:36][CH:35]([CH2:38][NH2:39])[CH2:34][CH2:33]1)=[O:31])([CH3:28])([CH3:27])[CH3:26].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C1C=CC2N(O)N=NC=2C=1.CCN(C(C)C)C(C)C>CN(C=O)C.C(OCC)(=O)C>[C:25]([O:29][C:30]([N:32]1[CH2:37][CH2:36][CH:35]([CH2:38][NH:39][C:21]([C:18]2[CH:17]=[CH:16][C:15]([C:13]3[C:12]([CH3:24])=[CH:11][CH:10]=[C:9]([NH:8][C:6]([C:3]4[CH:4]=[CH:5][O:1][CH:2]=4)=[O:7])[CH:14]=3)=[CH:20][CH:19]=2)=[O:22])[CH2:34][CH2:33]1)=[O:31])([CH3:28])([CH3:27])[CH3:26]
Reactant: Cc1ccc(NC(=O)c2ccoc2)cc1-c1ccc(C(=O)O)cc1
Reactant: CC(C)(C)OC(=O)N1CCC(CN)CC1
Agent: CN(C)C(On1nnc2cccnc21)=[N+](C)C
Agent: F[P-](F)(F)(F)(F)F
Agent: On1nnc2ccccc21
Solvent: CCOC(C)=O
Solvent: CN(C)C=O
Solvent: CCN(C(C)C)C(C)C
Product: Cc1ccc(NC(=O)c2ccoc2)cc1-c1ccc(C(=O)NCC2CCN(C(=O)OC(C)(C)C)CC2)cc1

Procedure:
5′-(3-Furoylamino)-2′-methyl-1,1′-biphenyl-4-carboxylic acid (50 mg, 0.156 mmol), 1-t-butyloxycarbonyl-4-aminomethylpiperidine (33.3 mg, 0.156 mmol), HATU (59.2 mg, 0.156 mmol), HOBT (21 mg, 0.156 mmol) and DIPEA (27 μL, 0.156 mmol) in DMF (2 ml) were stirred at room temperature for 18 h. The reaction was diluted with ethyl acetate (150 ml), washed with water (2×30 ml) and dried (magnesium sulphate). The solvent was evaporated under vacuum and the residue chromatographed on a silica flash column eluting with DCM/methanol/triethylamine (96:2:2). Concentration of the product fractions under vacuum N-[4′-({[(1-t-butyloxycarbonylpiperidin-4-yl)methyl]amino}carbonyl)-6-methyl-1,1′-biphenyl-3-yl]-3-furamide (45 mg, 56%). NMR; δH [2H6]-DMSO 9.91,(1H, s), 8.56,(1H, t), 8.35,(1H, s), 7.91,(2H, d), 7.78,(1H, t), 7.66,(1H, dd), 7.59,(1H, d), 7.43,(2H, d), 7.27,(1H, d), 6.98,(1H, m), 3.93,(2H, m), 3.17,(2H, t), 2.68,(2H, b), 2.19,(3H, s), 1.74,(1H, b), 1.67,(2H, m), 1.38,(9H, s), 1.03,(2H, m). LCMS: retention time 3.50 min, [MH-BOC]+418.
Reaction SMILES: [F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Cl:8][C:9]1[CH:17]=[CH:16][C:12]([C:13](Cl)=[O:14])=[CH:11][N:10]=1>CC(=O)OCC>[Cl:8][C:9]1[CH:17]=[CH:16][C:12]([C:13](=[O:14])[C:5]2[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=2)=[CH:11][N:10]=1
Reactant: Fc1ccccc1
Reactant: O=C(Cl)c1ccc(Cl)nc1
Solvent: CCOC(C)=O
Product: O=C(c1ccc(F)cc1)c1ccc(Cl)nc1

Procedure:
The fluorobenzene (150 ml, 1.60 mmol) and 6-chloronicotinoyl chloride (17.7 g, 100 mmol) were converted to product in a manner substantially analogous to Preparation 1 to yield 15.2 g. (66.1%). EA, MS(FD), NMR.
Reaction SMILES: [CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[CH2:13][CH2:12][C:11](=[O:14])[CH2:10][CH2:9]1.S(Cl)([Cl:18])(=O)=O.C(=O)(O)[O-].[Na+]>C(Cl)Cl>[Cl:18][CH:10]1[CH2:9][CH:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[CH3:1])[CH2:13][CH2:12][C:11]1=[O:14]
Reactant: O=S(=O)(Cl)Cl
Reactant: Cc1ccccc1C1CCC(=O)CC1
Agent: O=C([O-])O
Agent: [Na+]
Solvent: ClCCl
Product: Cc1ccccc1C1CCC(=O)C(Cl)C1
Temperature: 25 °C
Reaction time: 14 h

Procedure:
Prepared in analogy with a method in Hussey, A. S. and Herr, R. R., J. Org. Chem., 24, 843 (1959). To a 500 mL round-bottomed flask equipped with nitrogen inlet was added 33.3 grams (0.177 mol) of 4-(2-methylphenyl)cyclohexanone and 200 mL methylene chloride. To the stirring solution was added drop wise over 30 minutes a solution of 17.1 mL (0.212 mol) sulfuryl chloride in 10 mL methylene chloride. The reaction was stirred 14 hours at room temperature and poured into saturated aqueous sodium bicarbonate solution. The organic layer was separated, washed again with saturated aqueous sodium bicarbonate solution, dried over sodium sulfate, and evaporated to a yellow oil, 41 grams (100%), as a mixture of diastereomers which was used directly in the next step.
Reaction SMILES: [OH:1][C:2]([C:4]([F:7])([F:6])[F:5])=[O:3].[F:8][CH:9]([F:37])[CH2:10][NH:11][C:12]1[N:13]=[C:14]2[CH2:36][CH2:35][NH:34][CH2:33][C:15]2=[N:16][C:17]=1[N:18]1[CH2:23][CH2:22][CH:21]([O:24][C:25]2[CH:30]=[CH:29][C:28]([F:31])=[CH:27][C:26]=2[F:32])[CH2:20][CH2:19]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[CH3:71][O:72][C@@H:73]([CH3:77])[C:74](O)=[O:75]>CN(C=O)C>[F:37][CH:9]([F:8])[CH2:10][NH:11][C:12]1[N:13]=[C:14]2[CH2:36][CH2:35][N:34]([C:74](=[O:75])[C@@H:73]([O:72][CH3:71])[CH3:77])[CH2:33][C:15]2=[N:16][C:17]=1[N:18]1[CH2:19][CH2:20][CH:21]([O:24][C:25]2[CH:30]=[CH:29][C:28]([F:31])=[CH:27][C:26]=2[F:32])[CH2:22][CH2:23]1.[C:2]([OH:3])([C:4]([F:7])([F:6])[F:5])=[O:1]
Reactant: Fc1ccc(OC2CCN(c3nc4c(nc3NCC(F)F)CCNC4)CC2)c(F)c1
Reactant: CO[C@@H](C)C(=O)O
Agent: CN(C)C(On1nnc2cccnc21)=[N+](C)C
Agent: F[P-](F)(F)(F)(F)F
Solvent: CCN(C(C)C)C(C)C
Solvent: O=C(O)C(F)(F)F
Solvent: CN(C)C=O
Product: CO[C@@H](C)C(=O)N1CCc2nc(NCC(F)F)c(N3CCC(Oc4ccc(F)cc4F)CC3)nc2C1
Reaction time: 8 h

Procedure:
A solution of N-(2,2-difluoroethyl)-3-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-2-amine TFA salt (17 mg, 0.032 mmol), HATU (13.2 mg, 0.035 mmol), and DIPEA (12.2 mg, 0.095 mmol) in DMF (158 μL) was stirred for 10 min. Then, (S)-2-methoxypropanoic acid (3.6 mg, 0.035 mmol) was added at room temperature and the resulting reaction mixture stirred overnight. The crude reaction mixture was diluted in DMF, filtered through a hydrophilic PTFE 0.45 μm filter (Millipore® Millex-LCR), and purified via HPLC Method A to give the title compound as a TFA salt (6 mg) as a clear oil. 1H NMR (400 MHz, methanol-d4, mixture of rotamers) δ ppm 1.32 (d, J=6.6 Hz, 1.3H), 1.38 (d, J=6.6 Hz, 1.7H), 1.91-2.02 (m, 2H), 2.09-2.18 (m, 2H), 2.77 (t, J=5.8 Hz, 0.9H), 2.85 (t, J=4.9 Hz, 1.1H), 2.96-3.05 (m, 2H), 3.33 (s, 3H), 3.35-3.43 (m, 2H), 3.78 (td, J=14.5, 4.3 Hz, 2H), 3.84-3.97 (m, 2H), 4.31-4.40 (m, 1H), 4.42-4.49 (m, 1H), 4.59 (m, 0.9H), 4.67 (m, 1.1H), 5.90-6.22 (m, 1H), 6.84-6.91 (m, 1H), 6.98 (ddd, J=11.4, 8.6, 3.0 Hz, 1H), 7.18 (td, J=9.2, 5.3 Hz, 1H); ESI-MS m/z [M+H]+ 512.4.