2-Diphenylphosphanyl-1,3,2-diazaphospholidines were prepared via metathesis from 2-chloro-1,3,2-diazaphospholidines and LiPPh2. For some of the products, symmetrisation to tetraphenyldiphosphane and 2,2′-bis-1,3,2-diazaphospholidinyls was observed. Most of the derivatives were characterised by single-crystal X-ray diffraction, which showed that all compounds studied feature elongated exocyclic P–Cl
Rational Synthesis and Mutual Conversion of Bis‐N‐heterocyclic Diphosphanes and Secondary N‐Heterocyclic Phosphanes
作者:Oliver Puntigam、Daniela Förster、Nick A. Giffin、Sebastian Burck、Johannes Bender、Fabian Ehret、Arthur D. Hendsbee、Martin Nieger、Jason D. Masuda、Dietrich Gudat
DOI:10.1002/ejic.201201471
日期:2013.4.12
hydrolysis, and thus grants high product yields. In some cases, secondaryphosphanes were formed together with or instead of diphosphanes. This reaction is explained by a follow-up process involving homolytic fission of diphosphanes to give phosphanyl radicals, which then react with ammonium salts to give a mixture of secondaryphosphanes and chlorophosphanes. Even if its synthetic scope is as yet limited