123-75-1
四氢吡咯
+
91-56-5
吲哚-2,3-二酮
292638-85-8
→
~67%
104680-77-5
methyl 2'-oxospiro[1,2,5,6,7,8-hexahydropyrrolizine-3,3'-1H-indole]-2-carboxylate