摘要:
Reactions of (CO)(5)W(THF) with the sterically bulky azides RN(3) (R = CPh(3) or triptycyl) yield products that are consistent with decomposition of the transient zero-valence metal nitrene complexes (CO)(5)W=NR. When R=CPh(3), triphenyl imine results from phenyl migration to the electrophilic nitrogen of the short-lived nitrene complex. When R=triptycyl, the migration pathway is shut down by ring constraints and triptycyl amine is formed, presumably via hydrogen abstraction by the highly reactive metal nitrene.