Allylic phosphorous compounds are a class of important skeletons found in bioactive molecules and ligands. Here, we describe a synthesis of allylic phosphorous compounds from propargylic alcohols and chlorodiarylphosphines via a cascade reaction of OP bond formation/2,3‐rearrangement/Michael addition under metal‐free conditions. The reaction conditions are operationally simple and relatively mild, giving 2‐chloro‐allyl‐diarylphosphine oxides in ( E )‐configuration selectively.
Chen et al. (Sun,) studied this question.