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Treatment of Baylis–Hillman adducts with iodosobenzene (PhIO) in the presence of a catalytic amount of KBr in water at room temperature afforded the corresponding acyloxiranes in good yields.
A simple, mild and efficient stereoselective synthesis of (Z)- and (E)-allyl bromides and iodides has been developed by treatment of the Baylis–Hillman adducts with lithium bromide and iodide, respectively, in methylene chloride catalyzed by silica supported sodium hydrogen sulfate at room temperature. The role of various solvents, different reacting metallic halides, nature of the adducts and activity...
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