N-benzyl-3-chloro-N-(cyclopent-1-en-1-yl)isonicotinamide 、
氯甲酸甲酯 在
2,6-二甲基吡啶 作用下,
以
二氯甲烷 为溶剂,
生成 methyl-1-benzyl-3'-chloro-6a-hydroxy-2-oxo-2,3a,4,5,6,6a-hexahydro-1H,1'H-spiro[cyclopenta[b]pyrrole-3,4'-pyridine]-1'-carboxylate 、 methyl-1-benzyl-3'-chloro-6a-hydroxy-2-oxo-2,3a,4,5,6,6a-hexahydro-1H,1'H-spiro[cyclopenta[b]pyrrole-3,4'-pyridine]-1'-carboxylate