(Z)-Ethyl 2-azido-3-(benzo[d][1,3]dioxol-5-yl)acrylate 在
邻二甲苯 、 crude compound 、 silica gel 作用下,
以
邻二甲苯 为溶剂,
反应 3.0h,
以to afford 0.4 g (75%) of ethyl 5H-[1,3]dioxolo[4,5-f]indole-6-carboxylate (I-4b) as a pale yellow solid的产率得到ethyl 5H-[1,3]dioxolo[4,5-f]indole-6-carboxylate