反应详情

A mixture of 1-(3-formyl-4-nitrophenyl)-4-(7methylimidazo[1,2-a]pyridine-2-carbonyl)piperazine (22.8 g), triethyl phosphonoacetate (15.6 g), sodium hydride (60% dispersion in mineral oil) (2.92 g) and N,N-dimethylformamide (250 ml) were stirred for 5 hours at ambient temperature. Ethyl acetate (250 ml) was added thereto and the resulting precipitates were collected and washed with ethyl acetate (100 ml) to give ethyl 3-[3-[4-(7-methylimidazo[1,2-a]pyridine-2-carbonyl)-1-piperazinyl]-6-nitrophenyl]acrylate (18.70 g).

1. customthe resulting precipitates
2. customwere collected
3. washwashed with ethyl acetate (100 ml)