Synthetic Studies Towards the Preparation of 2??Benzyl??2??hydroxybenzofuran??3 (2H)??one, the Prototype of Naturally Occurring Hydrated Auronols
…, M Chlupacova, A Marecek, V Opletalova…
Index: Loeser, Reik; Chlupacova, Marta; Marecek, Ales; Opletalova, Veronika; Guetschow, Michael Helvetica Chimica Acta, 2004 , vol. 87, # 10 p. 2597 - 2601
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Citation Number: 9
Abstract
Abstract Various synthetic approaches were employed to prepare 2-benzyl-2- hydroxybenzofuran-3 (2H)-one (8), the prototype of naturally occurring auronols. While the base-induced ring transformation of 3-hydroxyflavanone (2) as well as the hydration of 2- benzylidenebenzofuran-3 (2H)-one (= aurone; 6) proved to be inappropriate, the hydrogenolytic epoxide-ring opening of 2′-phenylspiro [benzofuran-2 (3H), 2′-oxiran]-3 ...
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