1-chloro-3-fluoro-2-isothiocyanatobenzene

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

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

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

Procedure: To a solution of potassium tert-butoxide (0.41 g, 3.3 mmol) in THF (20 mL) at 0° C. was added a solution of 1-(2-bromo-4-fluorophenyl)-2-propanone (i.e. the product of Step A) (0.70 g, 3.0 mmol) in THF (10 mL) over 5 minutes. Stirring was continued for 1 h and then the temperature was reduced to −10° C. A solution of 1-chloro-3-fluoro-2-isothiocyanatobenzene (i.e. the product of Step B) (0.57 g, 3.0 mmol) in THF (10 mL) was added over 6 minutes, and stirring was continued for 15 minutes. Iodomethane (0.54 g, 3.8 mmol) was added, and the cooling bath was removed to provide a reaction mixture containing the intermediate compound α-acetyl-2-bromo-N-(2-chloro-6-fluorophenyl)-4-fluorobenzene-ethanethioamide. After 5 min, water (0.2 mL, 11 mmol), glacial acetic acid (0.53 mL, 9.1 mmol) and methylhydrazine (0.81 mL, 15 mmol) were added in rapid succession, and the reaction mixture was heated to reflux for 6 h. The crude reaction mixture was then concentrated under reduced pressure and purified by MPLC (0 to 100% ethyl acetate in hexanes as eluent) to provide the title product, a compound of the present invention, as an off-white solid (0.55 g). was reduced to −10° C stirring was continued for 15 minutes the cooling bath was removed to provide a reaction mixture After 5 min the reaction mixture was heated to reflux for 6 h The crude reaction mixture was then concentrated under reduced pressure purified by MPLC (0 to 100% ethyl acetate in hexanes as eluent)

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

Procedure: To a solution of 2-chloro-6-fluorobenzenamine (5.0 g, 34 mmol) in chlorobenzene (52 mL) was added carbonothioic dichloride (thiophosgene) (5.1 g, 45 mmol) and DMF (0.27 mL). The reaction mixture was refluxed for 2 h and then concentrated to leave the title compound as a brown oil (6.15 g), which was used in Step C without further purification. The reaction mixture was refluxed for 2 h concentrated

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

Procedure: The title compound was prepared following the procedure described for step-2 of intermediate-55 using methyl 4,5-diamino-2-hydroxybenzoate (step-1 of Intermediate-55, 0.700 g, 3.840 mmol), acetonitrile (5.0 mL), 1-chloro-3-fluoro-2-isothiocyanatobenzene (Intermediate-14, 0.700 g, 3.760 mmol) and N,N-di-isopropyl carbodimide (1.0 mL) to afford 0.5 g of the desired product. 1HNMR (DMSO-d6): δ 3.87 (s, 3H), 6.61 (s, 1H), 7.29-7.46 (m, 4H), 10.62 (s, 1H); MS [M+H]+: 336.17. The title compound was prepared

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

Procedure: The title compound was prepared following the procedure described for Step-1 of Intermediate-3 using methyl 5-amino-2,2-dimethyl-4-(methylamino)-2,3-dihydrobenzofuran-7-carboxylate (1.10 g, 4.4 mmol), 1-chloro-3-fluoro-2-isothiocyanatobenzene (Intermediate-14, 1.0 g, 5.3 mmol), N,N-di-isopropyl carbodimide (0.5 mL) and acetonitrile (3.0 mL) to afford 1.0 g of the desired product. 1HNMR (DMSO-d6): δ 1.46 (s, 6H), 3.34 (s, 2H), 3.53 (s, 3H), 3.72 (s, 3H), 7.00 (m, 1H), 7.06 (s, 1H), 7.17 (t, J=9.3 Hz, 1H), 7.28 (d, J=8.4 Hz, 1H), 10.39 (s, 1H). The title compound was prepared

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

Procedure: The title compound was prepared following the procedure described for intermediate-2 using 2-chloro-6-fluoro aniline (3.0 g, 19.35 mmol), thiophosgene (5.01 g, 43.47 mmol) and N-ethyl di-isopropyl amine (8.0 g, 64.00 mmol) to afford 1.0 g of the desired product. 1HNMR (DMSO-d6): δ 7.26 (m, 2H), 7.06 (t, J=9.6 Hz, 1H). The title compound was prepared

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-chloro-6-fluoro-phenylamine (400 mg, 2.8 mmol), thiocarbonic acid O,O-dipyridin-2-yl ester (650 mg, 2.8 mmol) and TEA (840 μL, 6.0 mmol) in 5 mL THF was stirred overnight at 50° C. The mixture was heated to 65° C. and stirred for further 5 h. The mixture was concentrated i.vac. The residue was purified by chromatography on HPLC (C-18 Symmetry, eluent gradient: water+0.15% HCOOH+15-100% acetonitrile). The mixture was heated to 65° C. stirred for further 5 h The mixture was concentrated i.vac The residue was purified by chromatography on HPLC (C-18 Symmetry, eluent gradient: water+0.15% HCOOH+15-100% acetonitrile)

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

Procedure: To a solution of potassium tert-butoxide (0.41 g, 3.3 mmol) in THF (20 mL) at 0° C. was added a solution of 1-(2-bromo-4-fluorophenyl)-2-propanone (i.e. the product of Step A) (0.70 g, 3.0 mmol) in THF (10 mL) over 5 minutes. Stirring was continued for 1 h and then the temperature was reduced to −10° C. A solution of 1-chloro-3-fluoro-2-isothiocyanatobenzene (i.e. the product of Step B) (0.57 g, 3.0 mmol) in THF (10 mL) was added over 6 minutes, and stirring was continued for 15 minutes. Iodomethane (0.54 g, 3.8 mmol) was added, and the cooling bath was removed to provide a reaction mixture containing the intermediate compound α-acetyl-2-bromo-N-(2-chloro-6-fluorophenyl)-4-fluorobenzene-ethanethioamide. After 5 min, water (0.2 mL, 11 mmol), glacial acetic acid (0.53 mL, 9.1 mmol) and methylhydrazine (0.81 mL, 15 mmol) were added in rapid succession, and the reaction mixture was heated to reflux for 6 h. The crude reaction mixture was then concentrated under reduced pressure and purified by MPLC (0 to 100% ethyl acetate in hexanes as eluent) to provide the title product, a compound of the present invention, as an off-white solid (0.55 g). was reduced to −10° C stirring was continued for 15 minutes the cooling bath was removed to provide a reaction mixture After 5 min the reaction mixture was heated to reflux for 6 h The crude reaction mixture was then concentrated under reduced pressure purified by MPLC (0 to 100% ethyl acetate in hexanes as eluent)

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

Procedure: To a solution of 2-chloro-6-fluorobenzenamine (5.0 g, 34 mmol) in chlorobenzene (52 mL) was added carbonothioic dichloride (thiophosgene) (5.1 g, 45 mmol) and DMF (0.27 mL). The reaction mixture was refluxed for 2 h and then concentrated to leave the title compound as a brown oil (6.15 g), which was used in Step C without further purification. The reaction mixture was refluxed for 2 h concentrated