

The regioselectivity in cyclofunctionalization of some acyclic olefinic alcohols with benzeneselenenyl halides (PhSeCl and PhSeBr) at different temperatures (−78°C, O°C and room temperature) is investigated. It has been found that Δ4‐ and Δ5‐ alkenols are converted into five‐ and/or six‐membered cyclic phenyl selenoethers, the yield of which decreases with increasing reaction temperature. PhSeCl has been found to be more efficient than PhSeBr in the cyclization reactions. Copyright © 1992 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
Konstantinovic, S.; Department of Chemistry, Faculty of Science, Svetozar Markovič University, P.O. Box 60,
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