Preparative Organic Chemistry
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ChemInform Abstract: Five-Membered 2,3-Dioxoheterocycles. Part 4. Aroylacetylation of Phenols by 5-Aryl-2,3-dihydrofuran-2,3-diones.
First published: September 22, 1987
Abstract
The furandiones (I), on heating to 80 °C, eliminate CO and subsequently react with the phenols (II) to give the phenyl esters (III) of the corresponding aroylacetic acids, i.e. aroylacetylation of the phenols (II) has taken place.
ChemInform Abstract
The furandiones (I), on heating to 80 °C, eliminate CO and subsequently react with the phenols (II) to give the phenyl esters (III) of the corresponding aroylacetic acids, i.e. aroylacetylation of the phenols (II) has taken place. The reactions of (I) with salicylic aldehyde (IV) or with 2-hydroxynaphthaldehyde (VII) afford the 3-aroylchromenones (V) and the 2-(2'-aroylacetoxy)-dioxenones (VI) or, resp., the benzochromenones (VIII).
