反应详情

A mixture of benzyl 3-oxoazetidine-1-carboxylate (1.026 g, 5 mmol), 1-methylpiperazine (0.833 mL, 7.50 mmol) and acetic acid (0.429 mL, 7.50 mmol) in 1,2-dichloroethane (5 mL) was stirred at room temperature for 3 h. sodium triacetoxyborohydride (2.119 g, 10.00 mmol) was added and the reaction mixture was stirred at room temperature overnight. A small amount of water was added to the reaction mixture and the reaction mixture was directly loaded onto a 120 g ISCO column and eluted with 1-12% 2N ammonia in methanol/dichloromethane). benzyl 3-(4-methylpiperazin-1-yl)azetidine-1-carboxylate (1.45 g) was obtained as a brown oil.

1. additionwas added
2. washeluted with 1-12% 2N ammonia in methanol/dichloromethane)