2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide

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

Procedure: To a suspension of 6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methylthieno[2,3-d]pyrimidin-4(3H)-one, (0.1 g, 0.26 mmol) in CH3CN (5 mL) was added K2CO3 (36 mg, 0.26 mmol), KI (43 mg, 0.26 mmol), and 2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (52 mg, 0.26 mmol). The reaction mixture was refluxed overnight and then quenched with H2O (20 mL). The resultant precipitate was filtered and dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1) providing 30 mg of pure 2-(6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methyl-4-oxothieno[2,3-d]pyrimidin-3 (4H)-yl)-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (yield: 21%). The reaction mixture was refluxed overnight quenched with H2O (20 mL) The resultant precipitate was filtered dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1)

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

Procedure: To a suspension of 6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methylthieno[2,3-d]pyrimidin-4(3H)-one, (0.1 g, 0.26 mmol) in CH3CN (5 mL) was added K2CO3 (36 mg, 0.26 mmol), KI (43 mg, 0.26 mmol), and 2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (52 mg, 0.26 mmol). The reaction mixture was refluxed overnight and then quenched with H2O (20 mL). The resultant precipitate was filtered and dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1) providing 30 mg of pure 2-(6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methyl-4-oxothieno[2,3-d]pyrimidin-3 (4H)-yl)-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (yield: 21%). The reaction mixture was refluxed overnight quenched with H2O (20 mL) The resultant precipitate was filtered dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1)

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

Procedure: To a cooled (0° C.) solution of N-ethyl-2,2,2-trifluoroethanamine hydrochloride, (0.45 g, 2.8 mmol) in DCM (10 mL) was added triethylamine (1.6 mL, 11.2 mmol) followed by 2-chloroacetyl chloride (0.22 mL, 2.8 mmol). The reaction was warmed to RT and stirred for 2 h. The reaction mixture was concentrated, redissolved in EtOAc (20 mL) and washed with brine (25 mL). The organic layer was dried over anhydrous Na2SO4 and concentrated to yield 0.6 g of crude product which was further purified by flash column chromatography using 1:1 EtOAc:hexanes as the eluent. 0.5 g of 2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (yield: 88%) was isolated. The reaction mixture was concentrated redissolved in EtOAc (20 mL) washed with brine (25 mL) The organic layer was dried over anhydrous Na2SO4 concentrated to yield 0.6 g of crude product which was further purified by flash column chromatography

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

Procedure: To a suspension of 6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methylthieno[2,3-d]pyrimidin-4(3H)-one, (0.1 g, 0.26 mmol) in CH3CN (5 mL) was added K2CO3 (36 mg, 0.26 mmol), KI (43 mg, 0.26 mmol), and 2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (52 mg, 0.26 mmol). The reaction mixture was refluxed overnight and then quenched with H2O (20 mL). The resultant precipitate was filtered and dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1) providing 30 mg of pure 2-(6-(4-(3-chlorophenyl)piperazine-1-carbonyl)-5-methyl-4-oxothieno[2,3-d]pyrimidin-3 (4H)-yl)-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (yield: 21%). The reaction mixture was refluxed overnight quenched with H2O (20 mL) The resultant precipitate was filtered dried to provide a crude solid which was purified by flash chromatography (Et2O:DCM, 1:1)

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

Procedure: To a cooled (0° C.) solution of N-ethyl-2,2,2-trifluoroethanamine hydrochloride, (0.45 g, 2.8 mmol) in DCM (10 mL) was added triethylamine (1.6 mL, 11.2 mmol) followed by 2-chloroacetyl chloride (0.22 mL, 2.8 mmol). The reaction was warmed to RT and stirred for 2 h. The reaction mixture was concentrated, redissolved in EtOAc (20 mL) and washed with brine (25 mL). The organic layer was dried over anhydrous Na2SO4 and concentrated to yield 0.6 g of crude product which was further purified by flash column chromatography using 1:1 EtOAc:hexanes as the eluent. 0.5 g of 2-chloro-N-ethyl-N-(2,2,2-trifluoroethyl)acetamide, (yield: 88%) was isolated. The reaction mixture was concentrated redissolved in EtOAc (20 mL) washed with brine (25 mL) The organic layer was dried over anhydrous Na2SO4 concentrated to yield 0.6 g of crude product which was further purified by flash column chromatography