methyl 2-azido-3-(3-[1,3]dioxolan-2-ylphenyl)acrylate 在
SiO2 、
ethyl acetate n-hexane 作用下,
以
邻二甲苯 为溶剂,
反应 3.0h,
以Flash chromatography (3×20 cm, SiO2, 6% to 17% EtOAc/hexane) afforded methyl 5-[1,3]dioxolan-2-ylindole-2-carboxylate 148 (1.10 g, 42%) as a white solid的产率得到methyl 5-[1,3]dioxolan-2-ylindole-2-carboxylate