Abstract:We present herein the synthesis of a nearly square pyramidal chlorophosphorane supported by the tetradentate bis(amidophenolate) ligand, N,N’-bis(3,5-di-tert-butyl-2-phenoxy)-1,2-phenylenediamide. After chloride abstraction the resulting phosphonium cation efficiently catalyzes the disproportionation of 1,2-diphenylhydrazine to aniline and azobenzene. Mechanistic studies, spectroscopic analyses and theoretical calculations suggest that it is the combination of high electrophilicity at the cationic P(V)-center,… Show more
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