Journal
TETRAHEDRON LETTERS
Volume 42, Issue 11, Pages 2213-2215Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(01)00114-9
Keywords
cyclization; selenium and compounds
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Stereoselectivity, regioselectivity and yields in the 6-exo selenoetherification of four unsaturated diols were found to depend on the stereochemistry of the diols and on the presence of an oxygen atom close to the intermediate seleniranium ring. Silica gel was useful in order to obtain good yields. Reactions performed both under kinetic and thermodynamic control led to the same products. (C) 2001 Elsevier Science Ltd. All rights reserved.
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