title: Diarylprolinol silyl ether salts as new, efficient, water-soluble, and recyclable organocatalysts for the asymmetric Michael addition on water.
abstract: A novel strategy for the catalytic asymmetric Michael addition of aldehydes to nitroolefins on water has been developed and provided the Michael adducts in excellent diastereo- and enantioselectivities. A notable feature of these organocatalysts is that they can be recycled for more than six times without a significant loss of catalytic activity and stereochemical control. In addition, the synthetic procedure presented is simple, practical, and environmentally benign.
authors.affiliation: Department of Chemistry, Texas A&M University-Commerce, Commerce, Texas 75429-3011, USA.
authors.forename: Zilong
authors.initials: Z
authors.lastname: Zheng
authors.forename: Benjamin L
authors.initials: BL
authors.lastname: Perkins
authors.forename: Bukuo
authors.initials: B
authors.lastname: Ni