Heterocyclic Compounds
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ChemInform Abstract: Stereospecific Synthesis of α,ω-cis- and α,ω-trans-Disubstituted Oxepanes.
First published: 31 May 2010
Abstract
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ChemInform Abstract
Reaction of trans-epoxides such as (I) or (III) with (Bu3Sn)2O results in formation of tin ethers. Subsequent treatment with Zn(O-Tf)2 induces a stereospecific cyclization via a SN2 process and exo mode selectivity giving oxepanes (II) and (IV) in good yields.
