2-(4-chlorophenoxy)-1-piperazin-1-ylethanone

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

Procedure: To a solution of 6-(4-fluorophenyl)-2-methylthieno[2,3-d]pyrimidin-4(3H)-one (40 mg, 0.15 mmol) and BOP (88 mg, 0.20 mmol) in CH3CN (1 ml) was added DBU (34 μl, 0.23 mmol). After stirring for 10 minutes at room temperature, 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (59 mg, 0.23 mmol) was added. The reaction was stirred at room temperature overnight and then heated at 60° C. for 4 hours. The solvents were removed under reduced pressure, and the crude residue was purified by flash chromatography on silica gel (CH2Cl2/MeOH 100:1) to yield the title compound as a white solid (66 mg, 86%). The reaction was stirred at room temperature overnight heated at 60° C. for 4 hours The solvents were removed under reduced pressure the crude residue was purified by flash chromatography on silica gel (CH2Cl2/MeOH 100:1)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chloro-6-(4-fluorophenyl)thieno[2,3-d]pyrimidine (20 mg, 0.08 mmol) and triethylamine (42 μl, 0.3 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (25 mg, 0.1 mmol). The mixture was heated at 60° C. for 2 hours. After cooling down to room temperature, the solvents were removed under reduced pressure. The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1) to yield the title compound as a white solid (27 mg, 75%). After cooling down to room temperature the solvents were removed under reduced pressure The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chloro-6-(4-fluorophenyl)thieno[2,3-d]pyrimidine (20 mg, 0.08 mmol) and triethylamine (42 μl, 0.3 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (25 mg, 0.1 mmol). The mixture was heated at 60° C. for 2 hours. After cooling down to room temperature, the solvents were removed under reduced pressure. The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1) to yield the title compound as a white solid (27 mg, 75%). After cooling down to room temperature the solvents were removed under reduced pressure The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(1-(4-fluorophenyl)ethyl)-7-(methylsulfonyl)thiazolo[5,4-d]pyrimidin-5-amine (50 mg, 0.14 mmol) and triethylamine (30 μl, 0.21 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (51 mg, 0.21 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling down to room temperature, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) furnishing the title compound as a white solid (50 mg, 67%). After cooling down to room temperature the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)

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

Procedure: A suspension of tert-butyl 4-(2-(4-chlorophenoxy)acetyl)piperazine-1-carboxylate (example 58, 0.58 g, 0.16 mmol) in dichloromethane (8 ml) was treated dropwise at room temperature with TFA until the solid completely dissolved. The reaction mixture was stirred under nitrogen at room temperature overnight. The volatiles were evaporated to dryness, diluted with water and the solid was collected by filtration. The solid was washed with water and dried to yield the title compound as a white solid (0.30 g, 72%). completely dissolved The volatiles were evaporated to dryness diluted with water the solid was collected by filtration The solid was washed with water dried

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(4-fluorophenethyl)-7-(methylsulfonyl)thiazolo[5,4-d]pyrimidin-5-amine (50 mg, 0.14 mmol) and triethylamine (30 μl, 0.21 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (51 mg, 0.21 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) to yield the title compound as a light yellow solid (64 mg, 85%). After cooling the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(4-fluorophenethyl)-7-(methylsulfonyl)thiazolo[5,4-d]pyrimidin-5-amine (50 mg, 0.14 mmol) and triethylamine (30 μl, 0.21 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (51 mg, 0.21 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) to yield the title compound as a light yellow solid (64 mg, 85%). After cooling the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 7-chloro-2-(4-fluorophenyl)-5-methylthiazolo[5,4-d]pyrimidine (30 mg, 0.11 mmol) and triethylamine (22 μl, 0.16 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (38 mg, 0.16 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) to yield the title compound as a white solid (40 mg, 75%). After cooling the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chloro-6-(4-fluorophenyl)thieno[2,3-d]pyrimidine (20 mg, 0.08 mmol) and triethylamine (42 μl, 0.3 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (25 mg, 0.1 mmol). The mixture was heated at 60° C. for 2 hours. After cooling down to room temperature, the solvents were removed under reduced pressure. The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1) to yield the title compound as a white solid (27 mg, 75%). After cooling down to room temperature the solvents were removed under reduced pressure The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(1-(4-fluorophenyl)ethyl)-7-(methylsulfonyl)thiazolo[5,4-d]pyrimidin-5-amine (50 mg, 0.14 mmol) and triethylamine (30 μl, 0.21 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (51 mg, 0.21 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling down to room temperature, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) furnishing the title compound as a white solid (50 mg, 67%). After cooling down to room temperature the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)

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

Procedure: A suspension of tert-butyl 4-(2-(4-chlorophenoxy)acetyl)piperazine-1-carboxylate (example 58, 0.58 g, 0.16 mmol) in dichloromethane (8 ml) was treated dropwise at room temperature with TFA until the solid completely dissolved. The reaction mixture was stirred under nitrogen at room temperature overnight. The volatiles were evaporated to dryness, diluted with water and the solid was collected by filtration. The solid was washed with water and dried to yield the title compound as a white solid (0.30 g, 72%). completely dissolved The volatiles were evaporated to dryness diluted with water the solid was collected by filtration The solid was washed with water dried

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 2-(4-fluorophenethyl)-7-(methylsulfonyl)thiazolo[5,4-d]pyrimidin-5-amine (50 mg, 0.14 mmol) and triethylamine (30 μl, 0.21 mmol) in dioxane (1 ml) was added 2-(4-chlorophenoxy)-1-(piperazin-1-yl)ethanone (51 mg, 0.21 mmol). The reaction mixture was heated at 70° C. for 3 hours. After cooling, the volatiles were removed under reduced pressure. The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1) to yield the title compound as a light yellow solid (64 mg, 85%). After cooling the volatiles were removed under reduced pressure The crude residue was purified by chromatography on silica gel (CH2Cl2/MeOH 70:1)