Synthesis of Phenylselenopyrans and Lactones from Allylic Alcohols and Acids via Baylis‐Hillman Reaction

A convenient, fast and high‐yielding strategy for the synthesis of phenylselenopyran and lactone derivatives from unsaturated alcohols and acids has been developed using Baylis‐Hillman acetates and phenylselenyl chloride, a procedure accompanied by the incorporation of the PhSe group into the organic framework. Furthermore, we describe an efficient modified protocol for the allylation of Baylis‐Hillman acetates using allylzinc bromide in fine yields and proceeds well in the absence of the external additive.