Nmp-based ionic liquids: Recyclable catalysts for both hetero-Michael addition and Knoevenagel condensation in water
作者:Pengkun Yang、Yawei Liu、Ling Chai、Zhenzhen Lai、Xiaomin Fang、Baoying Liu、Wenkai Zhang、Minghua Lu、Yuanqing Xu、Hao Xu
DOI:10.1080/00397911.2018.1434544
日期:2018.5.3
A series of novel N-methyl piperidine (Nmp)-based ionic liquids with 1,2-propanediol group are synthesized and used as catalysts for both hetero-Michael addition of alpha,beta-unsaturated amides and Knoevenagel condensation at room temperature in water; and all the examined substrates could be transformed into corresponding products in good to excellent yields. Meanwhile IL-catalyzed hetero-Michael addition of alpha,beta-unsaturated amides in water has not been reported in the previous literatures. Additionally, the catalyst is recyclable for the two reactions. This finding provides a green catalyst for both hetero-Michael addition of alpha,beta-unsaturated amides and Knoevenagel condensation in water.