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A green method for the synthesis of thiochromene derivatives in ionic liquids

✍ Scribed by Xiang-Shan Wang; Jian-Rong Wu; Jie Zhou; Mei-Mei Zhang

Publisher
Journal of Heterocyclic Chemistry
Year
2011
Tongue
English
Weight
190 KB
Volume
48
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Controlling the pH value by changing the negative ion of ionic liquids, the same reactions of aromatic aldehyde, 2‐(2,3‐dihydrothiochromen‐4‐ylidene) malononitrile and malononitrile product unaromatized and aromatized 6__H__‐benzo[c]thiochromene derivatives in high yields. The nice features of these procedures include mild reactions condition, simple operations, high yields, and environmentally benign. J. Heterocyclic Chem., (2011).

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## Abstract magnified image A series of new highly substituted isoquinoline derivatives was obtained from the reaction of 2‐(1‐substituted piperidin‐4‐ylidene)malononitrile, benzaldehyde and malononitrile or cyanoacetate in ionic liquid at 50Β°C. This novel procedure was different from the previous