The ozonation of N-phenyl-iminophosphoranes R3P= NPh 1a-b leads, after the PN bond breakage, to the corresponding phosphorus oxides 2a-b with the formation of complex adducts 3a-b which precipitate at room temperature. The stoichiometry and the reaction mechanism depend on the nature of substituents R linked to the phosphorus atom. For R= Ph we detected the phosphonium intermediate 5a, whereas for R= OEt the ...
