5-chloro-2-fluorobenzoyl chloride

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methanol (20 ml) was added to a solution 5-chloro-2-fluoro-benzoyl chloride (1.2 g, 6.2 mmol) in dichloromethane (10 ml) in an ice-bath. The reaction mixture was warmed to room temperature, stirred for 3 h and then concentrated to afford 5-chloro-2-fluoro-benzoic acid methyl ester (1.17 g, 100%). 1H NMR (CDCl3), δ (ppm): 7.93 (m, 1H), 7.48 (m, 1H), 7.12 (m, 1H), 3.96 (s, 3H). Step 2: 5-Chloro-2-fluoro-benzoic acid hydrazide: A mixture of 5-chloro-2-fluoro-benzoic acid methyl ester (1.17 g, 6.2 mmol) and hydrazine monohydrate (0.451 ml, 9.3 mmol) in ethanol (20 ml) was stirred at room temperature overnight. The reaction mixture was concentrated and then the residue was triturated with diethyl ether to afford 5-chloro-2-fluoro-benzoic acid hydrazide (497 mg, 42%, white solid). 1H NMR (DMSO), δ (ppm): 9.66 (bs, 1H), 7.58 (m, 2H), 7.36 (m, 1H), 4.58 (bs, 2H). concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methanol (20 ml) was added to a solution 5-chloro-2-fluoro-benzoyl chloride (1.2 g, 6.2 mmol) in dichloromethane (10 ml) in an ice-bath. The reaction mixture was warmed to room temperature, stirred for 3 h and then concentrated to afford 5-chloro-2-fluoro-benzoic acid methyl ester (1.17 g, 100%). 1H NMR (CDCl3), δ (ppm): 7.93 (m, 1H), 7.48 (m, 1H), 7.12 (m, 1H), 3.96 (s, 3H). Step 2: 5-Chloro-2-fluoro-benzoic acid hydrazide: A mixture of 5-chloro-2-fluoro-benzoic acid methyl ester (1.17 g, 6.2 mmol) and hydrazine monohydrate (0.451 ml, 9.3 mmol) in ethanol (20 ml) was stirred at room temperature overnight. The reaction mixture was concentrated and then the residue was triturated with diethyl ether to afford 5-chloro-2-fluoro-benzoic acid hydrazide (497 mg, 42%, white solid). 1H NMR (DMSO), δ (ppm): 9.66 (bs, 1H), 7.58 (m, 2H), 7.36 (m, 1H), 4.58 (bs, 2H). concentrated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 5-tert-Butyl-3-isobutylthiazol-2(3H)-imine (Example 16A, 1.5 g, 7.1 mmol) was dissolved in 10 mL of THF. 5-Chloro-2-fluorobenzoyl chloride (1.4 g, 7.1 mmol) was added then triethylamine (3 mL, 21.6 mmol) and the mixture stirred at room temperature for 3 hours. The reaction was diluted with EtOAc, washed with water, brine, dried over MgSO4, filtered and concentrated under reduced pressure. Purification by flash chromatography using a gradient from 0 to 40% EtOAc in hexanes afforded the title compound. 1H NMR (300 MHz, CHLOROFORM-D) δ ppm 0.98 (d, J=6.74 Hz, 6H) 1.36 (s, 9H) 2.19-2.39 (m, 1H) 4.01 (d, J=7.14 Hz, 2H) 6.63 (s, 1H) 7.05 (dd, J=10.31, 8.72 Hz, 1H) 7.35 (ddd, J=8.73, 3.97, 2.78 Hz, 1H) 8.10 (dd, J=6.74, 2.78 Hz, 1H). MS (DCI/NH3) m/z 369.2 (M+H)+. washed with water, brine dried over MgSO4 filtered concentrated under reduced pressure Purification by flash chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 5-tert-Butyl-3-isobutylthiazol-2(3H)-imine (Example 16A, 1.5 g, 7.1 mmol) was dissolved in 10 mL of THF. 5-Chloro-2-fluorobenzoyl chloride (1.4 g, 7.1 mmol) was added then triethylamine (3 mL, 21.6 mmol) and the mixture stirred at room temperature for 3 hours. The reaction was diluted with EtOAc, washed with water, brine, dried over MgSO4, filtered and concentrated under reduced pressure. Purification by flash chromatography using a gradient from 0 to 40% EtOAc in hexanes afforded the title compound. 1H NMR (300 MHz, CHLOROFORM-D) δ ppm 0.98 (d, J=6.74 Hz, 6H) 1.36 (s, 9H) 2.19-2.39 (m, 1H) 4.01 (d, J=7.14 Hz, 2H) 6.63 (s, 1H) 7.05 (dd, J=10.31, 8.72 Hz, 1H) 7.35 (ddd, J=8.73, 3.97, 2.78 Hz, 1H) 8.10 (dd, J=6.74, 2.78 Hz, 1H). MS (DCI/NH3) m/z 369.2 (M+H)+. washed with water, brine dried over MgSO4 filtered concentrated under reduced pressure Purification by flash chromatography

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Intermediate 16C was prepared according to the procedure for the synthesis of intermediate 15 by replacing 1-Boc-4-piperidone with dihydro-2H-pyran-3(4H)-one, and replacing 3,4-difluorobenzoyl chloride with 5-chloro-2-fluorobenzoyl chloride. LCMS (+ESI) m/z=253 [M+H]+.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Intermediate 16C was prepared according to the procedure for the synthesis of intermediate 15 by replacing 1-Boc-4-piperidone with dihydro-2H-pyran-3(4H)-one, and replacing 3,4-difluorobenzoyl chloride with 5-chloro-2-fluorobenzoyl chloride. LCMS (+ESI) m/z=253 [M+H]+.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Compound 86 was prepared according to the procedure for the synthesis of compound 36 by replacing 3,4-difluorobenzoyl chloride with 5-chloro-2-fluorobenzoyl chloride. LCMS (+ESI) m/z=453.3 [M+H]+. 1H NMR (CDCl3) δ 7.81 (d, J=9.1 Hz, 1H), 7.60-7.62 (dd, J=2.7, 6.21 Hz, 1H), 7.27-7.32 (m, 1H), 7.07 (t, J=9.3 Hz, 1H), 6.56 (br, 1H), 4.57 (s 2H), 4.12 (d, J=9.2 Hz, 1H), 3.87 (t, J=5.6 Hz, 2H), 3.66 (s, 3H), 3.36-3.41 (m, 2H), 3.08-3.12 (m, 2H), 1.03 (s, 9H). Purity: 97%.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Compound 86 was prepared according to the procedure for the synthesis of compound 36 by replacing 3,4-difluorobenzoyl chloride with 5-chloro-2-fluorobenzoyl chloride. LCMS (+ESI) m/z=453.3 [M+H]+. 1H NMR (CDCl3) δ 7.81 (d, J=9.1 Hz, 1H), 7.60-7.62 (dd, J=2.7, 6.21 Hz, 1H), 7.27-7.32 (m, 1H), 7.07 (t, J=9.3 Hz, 1H), 6.56 (br, 1H), 4.57 (s 2H), 4.12 (d, J=9.2 Hz, 1H), 3.87 (t, J=5.6 Hz, 2H), 3.66 (s, 3H), 3.36-3.41 (m, 2H), 3.08-3.12 (m, 2H), 1.03 (s, 9H). Purity: 97%.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-Amino-1H-pyrrole-2-carboxylic acid amide (1.25 g, 10 mmole) was partially dissolved in 45 ml acetonitrile, triethylamine (1.39 ml, 10 mmole) was added followed by dropwise addition of 5-chloro-2-fluorobenzoyl chloride (1.93 g, 10 mmole) in 3 ml chloroform. The reaction mixture was stirred at room temperature overnight, the solvent was removed under vacuum and the residue was taken up in chloroform, washed with 10% sodium bicarbonate, water, and dried over sodium sulfate (anh.). A solid crystallized from solution upon standing. Additional product was obtained by chromatographing the filtrate on silica gel eluting with 3% methanol/chloroform. 600 mg of product was obtained (yield: 21%). the solvent was removed under vacuum washed with 10% sodium bicarbonate, water dried over sodium sulfate (anh.) A solid crystallized from solution Additional product was obtained

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-Amino-1H-pyrrole-2-carboxylic acid amide (1.25 g, 10 mmole) was partially dissolved in 45 ml acetonitrile, triethylamine (1.39 ml, 10 mmole) was added followed by dropwise addition of 5-chloro-2-fluorobenzoyl chloride (1.93 g, 10 mmole) in 3 ml chloroform. The reaction mixture was stirred at room temperature overnight, the solvent was removed under vacuum and the residue was taken up in chloroform, washed with 10% sodium bicarbonate, water, and dried over sodium sulfate (anh.). A solid crystallized from solution upon standing. Additional product was obtained by chromatographing the filtrate on silica gel eluting with 3% methanol/chloroform. 600 mg of product was obtained (yield: 21%). the solvent was removed under vacuum washed with 10% sodium bicarbonate, water dried over sodium sulfate (anh.) A solid crystallized from solution Additional product was obtained

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To an ice bath cooled mixture of 345 mg of 6-(2-chloro-4-aminobenzoyl)-1,4,5,6-tetrahydropyrazolo[3,4-d]thieno[3,2-b]azepine in 3.5 ml of methylene chloride under argon is added 417 μl of triethylamine followed by a solution of 482 mg of 2-fluoro-5-chlorobenzoyl chloride in 1.5 ml of methylene chloride. The reaction mixture is stirred at room temperature for 18 hours under argon. An additional 40 ml of methylene chloride is added followed by 20 ml of water. The organic layer is washed with 20 ml each of 2N citric acid, 1M NaHCO3 and brine. The organic layer is dried (Na2SO4), filtered through hydrous magnesium silicate and the filtrate evaporated in vacuo to give 650 mg of the desired product as a solid residue. To a solution of 500 mg of the preceding compound in 4 ml methanol and 4 ml of tetrahydrofuran is added 1.51 ml of 1N NaOH. The reactants are stirred at room temperature for 18 hours. The reaction mixture is neutralized with 1N HCl and evaporated in vacuo to a residue which is diluted with 50 ml of chloroform and washed with water, brine and dried (Na2SO4). The organic layer is passed through a pad of hydrous magnesium silicate. The filtrate is evaporated in vacuo to a residue which is crystallized from ethyl acetate containing ethyl alcohol. The collected solid is dried to give 215 mg of the desired product as an off white solid, m.p. 282°-288° C. To an ice bath cooled The organic layer is washed with 20 ml each of 2N citric acid, 1M NaHCO3 and brine The organic layer is dried (Na2SO4) filtered through hydrous magnesium silicate the filtrate evaporated in vacuo