中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | di(N,N-diphenyl)(phenyl)phosphine oxide | 107822-55-9 | C30H25N2OP | 460.515 |
By the halogen–lithium interconversion method, 4,4′-bis(diphenylphosphine)biphenyl (1) was prepared. Under different reaction conditions, mono- and di-oxygenated products were obtained. An attempt to prepare 1 by the Grignard reagent method failed to give the expected product but[Formula: see text]was obtained. Bis(diphenylamine)phenylphosphine was also prepared. Tetraphenyldiphosphine monoxide resulted from an attempt to prepare N-diphenylaminodiphenylphosphine. The mechanism of this reaction is discussed. Infrared spectroscopy, elemental analysis, and activation analysis for the determination of oxygen content were performed for the identification of the above compounds.Reactions of 1 with sodium–potassium alloy in tetrahydrofuran (THF) and 1,2-dimethoxyethane (DME) gave a radical anion which was identified by its electron spin resonance spectra at different temperatures.