Article ID Journal Published Year Pages File Type
5272586 Tetrahedron Letters 2009 4 Pages PDF
Abstract

In the presence of 5 mol % of tin(IV) triflimidate, a cyclization reaction of epoxyesters to δ-hydroxy-γ-lactones proceeding in 46-98% yields without additives, ligands, or co-catalysts was observed. The cyclization to five-membered rings is greatly favored compared to the possible six-membered rings formation and is probably under the control of a Thorpe-Ingold type effect.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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