Die Addition von Fluorcarbenen an Norbornadien: Eine Homo‐1,4‐addition

Abstract
It has been found that difluorocarbene undergoes extensive addition to the endo‐face of norbornadiene, yeilding the cheletropic adduct, 4.4‐difluorotetracyclo[3.3.0.02,8.03,6]‐octane. Similar behaviour has been observed for fluorochlorocarbene. Possible mechanisms to rationalize this novel behaviour of carbenes are discussed.