Oxidative cross-coupling between secondary phosphine selenides and thiols or dithiols: a facile regio-selective synthesis of thioselenophosphinic S-esters and S-diesters

Reactions between secondary phosphine selenides and a wide range of aliphatic, aromatic and heteroaromatic thiols or dithiols proceed in the Et3N/CCl4 oxidative system under mild conditions (rt 1–3 h) to give thioselenophosphinic S-esters or S-diesters in 80–92% isolated yields.