Helvetica Chimica Acta

Synthesen von 3??Hydroxy??4??methyl??3??cyclobuten??1, 2??dion (Methylmoniliformin)

…, P Martin, H Sauter, T Winkler

Index: Bellus, Daniel; Martin, Pierre; Sauter, Hanspeter; Winkler, Tammo Helvetica Chimica Acta, 1980 , vol. 63, # 5 p. 1130 - 1140

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Citation Number: 14

Abstract

Summary New routes to 3-hydroxy-4-methyl-3-cyclobutene-1, 2-dione (9), the lowest homologue of the mycotoxine moniliformin are described. A common feature of all pathways is the synthesis of methylcyclobutanes having the oxidation level 6. Precursors, which are easily transformed to 9 by acid catalyzed hydrolysis, include [2+ 21-cycloadducts of in situ generated methyl ketene to tetraethoxyethylene and [2+ 21-photocycloadducts of ...