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Synthesis of Cyclocholates and Derivatives

✍ Scribed by Gao, Hongwu; Dias, Jerry Ray


Book ID
127291858
Publisher
Taylor and Francis Group
Year
1997
Tongue
English
Weight
527 KB
Volume
27
Category
Article
ISSN
0039-7911

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## Abstract Esculetin (1) and the novel compounds 5‐chloroesculetin (5) and 5‐bromoesculetin (6) were obtained from a light‐induced cyclization of __trans__‐caffeic acid (3) catalyzed by [FeNa(edta)] and/or H~2~SO~4~, HCI, or HBr (__Scheme 1__). The experimental conditions for __trans__‐__cis__‐iso