Oligophosphan-Liganden, XXIV. Tris(2-dimethylphosphinophenyl)phosphan, P(C6H4PMe2-2)3 / Oligophosphine Ligands, XXIV. Tris(2-dimethylphosphinophenyl)phosphine, P(C6H4PMe2-2)3

Abstract

Reaction of 2-BrC6H4PCl2 (1) with methyl lithium gave 2-BrC6H4PMe; (2). Metalation of 2 with n-butyl lithium and further reaction of the lithio-derivative 2-LiC6H4PMe2 with triphenyl phos­phite yielded the title compound. P(C6H4PMe2-2)3 (3). characterized by NMR and mass spectro­scopy as well as by an X-ray structure analysis. Quaternization of 2 with methyl iodide gave [2-BrC6H4PMe3]I (2a). the molecular structure of which has also been determined by single­crystal diffraction methods.