Tetrahedron Letters

A mild and convenient one-pot photochemical synthesis of chroman-4-one derivatives. The photo-Fries rearrangement of (hetero) aryl 3-methyl-2-butenoate esters …

CS López, R Erra-Balsells, SM Bonesi

Index: Lopez, Cecilia Samaniego; Erra-Balsells, Rosa; Bonesi, Sergio M. Tetrahedron Letters, 2010 , vol. 51, # 33 p. 4387 - 4390

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Citation Number: 12

Abstract

The biphasic base catalysis-mediated photo-Fries rearrangement reaction of aryl 3-methy-2- butenoate esters in room temperature cyclohexane—10% KOH system was investigated. This mild photochemical reaction leads to the formation of chroman-4-one derivatives in good to high yield and in short reaction times (30–120min) in a one-pot photochemical reaction. Also, the photochemical reaction, as a convenient, versatile, and general method ...

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