Reduction of tertiaryphosphineoxides and sulfides into the corresponding phosphines with amine-assisted aluminum hydrides has been studied. The method is characterized by mild conditions, short reaction time, high efficiency, and expanded substrate scope. The new method is an alternative to the currently used methods of reducing phosphineoxides or recycling phosphines engaged in organic reactions
Radical-based reduction of phosphine sulfides and phosphine selenides by (Me3Si)3SiH
作者:Roberto Romeo、Lucyna A Wozniak、Chryssostomos Chatgilialoglu
DOI:10.1016/s0040-4039(00)01759-7
日期:2000.12
Tris(trimethylsilyl)silane reacts with phosphinesulfides and phosphineselenides under free radical conditions to give the corresponding phosphines in good yields. Stereochemical studies on P-chiral phosphinesulfides show these reductions proceed with retention of configuration.
Tributylphosphane, DMAD and carbonyl sulfide react in a 2:2:1 ratio to give Bu3PS and the crystalline adduct 2 which is stabilised by extensive delocalisation; the sulfur analogue 5 has also been obtained.
Mechanistic Study of Precursor Evolution in Colloidal Group II−VI Semiconductor Nanocrystal Synthesis
作者:Haitao Liu、Jonathan S. Owen、A. Paul Alivisatos
DOI:10.1021/ja0656696
日期:2007.1.1
reaction mechanism is proposed where trialkylphsophine chalcogenides deoxygenate the oleic acid or phosphonic acid surfactant to generate trialkylphosphine oxide and oleic or phosphonic acid anhydride products. Results from kinetics experiments suggest that cleavage of the phosphorus chalcogenide double bond (TOP=E) proceeds by the nucleophilic attack of phosphonate or oleate on a (TOP=E)-M complex, generating