Oxidative transition-metal-free, cross-coupling reaction between
secondary phosphine chalcogenides and alcohols or phenols proceeds
in the carbon tetrachoride/triethylamine system under mild
conditions (20-52 ˚C, 1-12 h) to give
phosphinochalcogenoic O-esters in 70-95% yields.
secondary phosphine chalcogenides - alcohols - phenols - phosphinochalcogenoic O-esters