Abstract

AbstractThe study of the mass spectra of six α‐diazo‐N‐cyanoimines and the collision‐induced dissociation/mass‐analysed ion kinetic energy spectra of their [M‐N2]+· fragment ions demonstrate the decay sequence: [α‐diazoimine]+·→ α‐iminocarbene]+·→ [ketenimine]+. This last ion is shown to be structurally identical to the one formed by electron‐induced cycloreversion of the ketenimine‐benzylideneaniline cycloadduct.

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