(2S)-1-benzhydryl-2-methylpiperazine

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

Procedure: To a solution of a mixture of (S)-1-benzhydryl-2-methylpiperazine and (S)-1-benzhydryl-3-methylpiperazine (490 mg, 1.839 mmol) in 25 mL of MeCN was added tert-butyl bromoacetate (356 μl, 2.207 mmol), followed by slow addition of triethylamine (384 μl, 2759 μmol). The reaction mixture was stirred at rt overnight. The solution was evaporated to dryness and the residual was submitted to flash chromatography (SiO2, DCM to DCM/EtOAc=100:3 to 100:5 to 100:10) to give (S)-tert-butyl 2-(4-benzhydryl-3-methylpiperazin-1-yl)acetate as a colorless oil and (S)-tert-butyl 2-(4-benzhydryl-2-methylpiperazin-1-yl)acetate as a colorless oil. The solution was evaporated to dryness

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

Procedure: To a solution of a mixture of (S)-1-benzhydryl-2-methylpiperazine and (S)-1-benzhydryl-3-methylpiperazine (490 mg, 1.839 mmol) in 25 mL of MeCN was added tert-butyl bromoacetate (356 μl, 2.207 mmol), followed by slow addition of triethylamine (384 μl, 2759 μmol). The reaction mixture was stirred at rt overnight. The solution was evaporated to dryness and the residual was submitted to flash chromatography (SiO2, DCM to DCM/EtOAc=100:3 to 100:5 to 100:10) to give (S)-tert-butyl 2-(4-benzhydryl-3-methylpiperazin-1-yl)acetate as a colorless oil and (S)-tert-butyl 2-(4-benzhydryl-2-methylpiperazin-1-yl)acetate as a colorless oil. The solution was evaporated to dryness

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

Procedure: To a solution of a mixture of (S)-1-benzhydryl-2-methylpiperazine and (S)-1-benzhydryl-3-methylpiperazine (490 mg, 1.839 mmol) in 25 mL of MeCN was added tert-butyl bromoacetate (356 μl, 2.207 mmol), followed by slow addition of triethylamine (384 μl, 2759 μmol). The reaction mixture was stirred at rt overnight. The solution was evaporated to dryness and the residual was submitted to flash chromatography (SiO2, DCM to DCM/EtOAc=100:3 to 100:5 to 100:10) to give (S)-tert-butyl 2-(4-benzhydryl-3-methylpiperazin-1-yl)acetate as a colorless oil and (S)-tert-butyl 2-(4-benzhydryl-2-methylpiperazin-1-yl)acetate as a colorless oil. The solution was evaporated to dryness

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

Procedure: To a solution of a mixture of (S)-1-benzhydryl-2-methylpiperazine and (S)-1-benzhydryl-3-methylpiperazine (490 mg, 1.839 mmol) in 25 mL of MeCN was added tert-butyl bromoacetate (356 μl, 2.207 mmol), followed by slow addition of triethylamine (384 μl, 2759 μmol). The reaction mixture was stirred at rt overnight. The solution was evaporated to dryness and the residual was submitted to flash chromatography (SiO2, DCM to DCM/EtOAc=100:3 to 100:5 to 100:10) to give (S)-tert-butyl 2-(4-benzhydryl-3-methylpiperazin-1-yl)acetate as a colorless oil and (S)-tert-butyl 2-(4-benzhydryl-2-methylpiperazin-1-yl)acetate as a colorless oil. The solution was evaporated to dryness