Diverse Cyclization Catalyzed by In(OTf)3 for the Convergent Assembly of Substituted Tetrahydrofurans and Tetrahydropyrans
Organic Letters2001Vol. 3(17), pp. 2669–2672
Citations Over TimeTop 10% of 2001 papers
Abstract
[reaction: see text]. A novel In(OTf)3-catalyzed (3,5) oxonium-ene type cyclization for the facile construction of various multisubstituted tetrahydrofurans and tetrahydropyrans was successfully developed. Further mechanistic investigations unveiled an In(OTf)3-catalyzed skeletal reorganization of the tetrahydrofuran to its thermodynamic isomer under thermal conditions.
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