Über die Reaktion von tert‐Butyl(tert‐butylimino)phosphan mit tert‐Butyl‐(tert‐butylimino)boran

On the Reaction of tert ‐Butyl( tert ‐butylimino)phosphane with tert ‐Butyl( tert ‐butylimino)borane Contrary to the [2 + 2] cycloaddition reaction of aminoiminophosphanes with iminoboranes, the title compounds react to yield the heterocyclic products 7 and 9 , the structures of which were determined by means of spectroscopic methods and, in the case of 9 , additionally by X‐ray structural analysis. Further investigations on the reaction mechanism suggest that the first step of the reaction sequence is an oxidative [2 + 1] cycloaddition of the iminophosphane 3 to 2 .