title: Novel ionic liquid with both Lewis and Brønsted acid sites for Michael addition.
abstract: Ionic liquid with both Lewis and Brønsted acid sites has been synthesized and its catalytic activities for Michael addition were carefully studied. The novel ionic liquid was stable to water and could be used in aqueous solution. The molar ratio of the Lewis and Brønsted acid sites could be adjusted to match different reactions. The results showed that the novel ionic liquid was very efficient for Michael addition with good to excellent yields within several min. Operational simplicity, high stability to water and air, small amount used, low cost of the catalyst used, high yields, chemoselectivity, applicability to large-scale reactions and reusability are the key features of this methodology, which indicated that this novel ionic liquid also holds great potential for environmentally friendly processes.
authors.affiliation: Zhejiang Medicine Co. Ltd., Xinchang Pharmaceutical Factory, Zhejiang 312500, China; E-Mails:  shiningchemical@126.com  (X.J.);  shiningchemistry@126.com  (W.Y.);  songxiaohua110@126.com  (X.S.);  shingchemical@126.com  (W.M.);  shingchemistry@126.com  (X.L.).
authors.forename: Xiaoyue
authors.initials: X
authors.lastname: Jiang
authors.forename: Weidong
authors.initials: W
authors.lastname: Ye
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Song
authors.forename: Wenxin
authors.initials: W
authors.lastname: Ma
authors.forename: Xuejun
authors.initials: X
authors.lastname: Lao
authors.forename: Runpu
authors.initials: R
authors.lastname: Shen
mesh_terms: D002384:Catalysis; D052578:Ionic Liquids / Q000737:chemistry*; D007477:Ions / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D058116:Lewis Acids / Q000737:chemistry*; D014867:Water
chemical_list: D052578:Ionic Liquids; D007477:Ions; D058116:Lewis Acids; D014867:Water; D007501:Iron