Concept

Phosphinite

Summary
In organic chemistry, phosphinites are organophosphorus compounds with the formula . They are used as ligands in homogeneous catalysis and coordination chemistry. Preparation Phosphinites are prepared by alcoholysis of organophosphinous chlorides. For example, treatment of chlorodiphenylphosphine with methanol and base gives methyl diphenylphosphinite: :ClPPh2 + CH3OH → CH3OPPh2 + HCl Although they are esters of phosphinous acids (R2POH), phosphinites are not made via such intermediates. Reactions Oxidation of phosphinites gives phosphinates: :2 P(OR)R2 + O2 → 2 OP(OR)R2 Phosphinites are ligands, giving derivatives similar to metal phosphine complexes. They are stronger pi-acceptors than typical phosphine ligands. See also *Phosphine - PR3 *Phosphine oxide - OPR3 *Phosphonite - P(OR)2R *Phosphite - P(OR)3 *Phosphinate - OP(OR)R2 *Phosphonate - OP(OR)2R *Phosphate - OP(OR)3
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