FeCl₃‐Catalyzed Aza‐Diels–Alder Reactions of Methylenecyclopropanes with Imines

Abstract

FeCl₃‐catalyzed aza‐Diels–Alder reaction of methylenecyclopropane with imine provides a facile and efficient route for the synthesis of tetrahydroquinoline with a spirocyclopropyl ring.

Keywords:

• aza‐Diels–Alder
• FeCl₃
• imine
• methylenecyclopropane
• tetrahydroquinoline

Acknowledgment

We thank Professor Xue‐Long Hou for his invaluable advice during the course of this research. Financial support from National Natural Science Foundation of China (20642006, 20502004) and the Science and Technology Commission of Shanghai Municipality (05ZR14013) is gratefully acknowledged.