methyl (E)-3-[(1R,4S,8S,8aS)-8-ethyl-1'-methyl-4-oxido-2'-oxospiro[2,3,5,6,7,8a-hexahydroindolizin-4-ium-1,3'-indole]-8-yl]prop-2-enoate 在
potassium diazodicarboxylate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 10.0h,
以38%的产率得到methyl 3-[(1R,4S,8S,8aS)-8-ethyl-1'-methyl-4-oxido-2'-oxospiro[2,3,5,6,7,8a-hexahydroindolizin-4-ium-1,3'-indole]-8-yl]propanoate