title: Jørgensen-Hayashi catalysts supported on poly(ethylene glycol)s as highly efficient and reusable organocatalysts for the enamine-catalyzed asymmetric Michael reaction.
abstract: A new kind of recyclable and reusable PEG-supported Jørgensen-Hayashi catalyst is synthesized for the first time and proven to be efficient for the enamine-catalyzed asymmetric Michael reaction with generally moderate to good diastereoselectivity and high to excellent enantioselectivity (up to 6 : 1 dr, 99% ee). The prepared PEG-supported catalyst can be recovered eight times and was found to provide similar diastereoselectivity and enantioselectivity to unsupported functional catalysts.
authors.affiliation: Catalytic Hydrogenation Research Centre, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, China. chrc@zjut.edu.cn.
authors.forename: Ai-Bao
authors.initials: AB
authors.lastname: Xia
authors.forename: Can
authors.initials: C
authors.lastname: Zhang
authors.forename: Yan-Peng
authors.initials: YP
authors.lastname: Zhang
authors.forename: Yan-Jun
authors.initials: YJ
authors.lastname: Guo
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Zhang
authors.forename: Zhao-Bo
authors.initials: ZB
authors.lastname: Li
authors.forename: Dan-Qian
authors.initials: DQ
authors.lastname: Xu
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D002384:Catalysis; D007659:Ketones / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D007659:Ketones; D011092:Polyethylene Glycols