摘要

Treatment of lithio derivatives of polystyrene-supported methyl alpha-selenopropionate, 2-selenopropiophenone, 1-selenoethyl phenyl sulfone and diethyl 1-selenoethylphosphonate with aldehydes respectively, followed by cleavage from the polymer by oxidation-elimination with 30% hydrogen peroxide efficiently afforded Baylis-Hillman products in good yields and high purities.