The oxidative cross-coupling of secondary phosphine chalcogenides with mercaptoalkanols in the presence of the CCl/EtN system at an equimolar ratio of reagents proceeds chemoselectively under mild conditions (20–25°C, 2–7 h) to give the corresponding thioesters of chalcogenophosphinic acids, containing free reactive hydroxyl groups, in 76–89% yield.
K.O. Khrapova (Wed,) studied this question.