Novel Bifunctional Organocatalyst Using Sulfamide as Hydrogen Bonding Donor: Application in Asymmetric Michael Addition of Cyclic Ketones to Nitroolefins
作者:Fei Deng、Hong-Ying Liu
DOI:10.1080/00397911.2010.531174
日期:2012.3.1
Abstract A chiral bifunctional organocatalyst using sulfamide as novel type of hydrogen bonding donor has been developed. This catalyst was found to efficiently catalyze the Michael addition of cyclic ketones to nitroolefins in water, and the products were obtained in good yield (up to 97%), and excellent diastereoselectivities (up to >50:1) and enantioselectivities (up to 96%). GRAPHICAL ABSTRACT
摘要 开发了一种以磺酰胺为新型氢键供体的手性双功能有机催化剂。发现该催化剂可有效催化水中的环酮与硝基烯烃的迈克尔加成反应,并以良好的收率(高达 97%)、优异的非对映选择性(高达 >50:1)和对映选择性(高达 96 %)。图形概要