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One-pot synthesis of polyfunctionalized pyrans catalyzed by basic ionic liquid in aqueous media

✍ Scribed by Kai Gong; Hua-Lan Wang; Jun Luo; Zu-Liang Liu

Publisher
Journal of Heterocyclic Chemistry
Year
2009
Tongue
English
Weight
78 KB
Volume
46
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

magnified image An efficient and convenient method for the synthesis of polyfunctionalized 4__H__‐pyrans has been achieved through the one‐pot condensation of aromatic aldehydes, malononitrile, and 4‐hydroxycoumarin, phenols or active methylene carbonyl compounds such as 1, 3‐cyclohexanedione and dimedone in the presence of 1‐butyl‐3‐methyl imidazolium hydroxide ([bmim]OH) as catalyst in aqueous media. This method offers several advantages short reaction time, high yields, and simple procedure. J. Heterocyclic Chem., (2009).

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