Green and efficient Knoevenagel condensation catalysed by a DBU based ionic liquid in water

…, LM Wang, LL Wang, XZ Chen…

Index: Ying, An-Guo; Wang, Li-Min; Wang, Le-Le; Chen, Xin-Zhi; Ye, Wei-Dong Journal of Chemical Research, 2010 , # 1 p. 30 - 33

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Citation Number: 22

Abstract

An efficient, clean and facile protocol for the Knoevenagel condensation of aromatic aldehydes with active methylene compounds catalysed by task specific ionic liquid 1, 8- diazabicyclo [5.4. 0]-undec-7-en-8-ium acetate in an aqueous medium has been developed. The reactions proceed at room temperature and high to excellent yields were afforded. The work-up procedure is very simple. The ionic liquid could be recycled for 10 runs without ...