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.[a] Dr.

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