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Solvent-free three-component synthesis of 7-aryl-1,1-dioxothieno[3,2-b]pyran derivatives catalyzed by ammonium acetate

✍ Scribed by Changsheng Yao; Xiaodong Feng; Cuihua Wang; Bei Jiang; Chenxia Yu; Xiangshan Wang; Tuanjie Li; Shujiang Tu

Publisher: Journal of Heterocyclic Chemistry
Year: 2011
Tongue: English
Weight: 148 KB
Volume: 48
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.696

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✦ Synopsis

Abstract

An efficient synthesis of 7‐aryl‐1,1‐dioxothieno[3,2‐b]pyran derivatives via the reaction of aryl aldehyde, tetrahydrothiophene‐3‐one‐1,1‐dioxide and malononitrile or ethyl 2‐cyanoacetate was performed at room temperature catalyzed by ammonium acetate under solvent‐free conditions. Compared with the conventional methods, this protocol features mild reaction conditions, high yields, and eco‐friendliness. J. Heterocyclic Chem., (2011).

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