Simple Diamine- and Triamine-Protonic Acid Catalysts for the Enantioselective Michael Addition of Cyclic Ketones to Nitroalkenes
作者:Sunil V. Pansare、Keyur Pandya
DOI:10.1021/ja062701n
日期:2006.8.1
chiral, pyrrolidine-based diamine and triamine derivatives that incorporate the secondary-secondary diamine motif are efficient catalysts for the highly diastereoselective and enantioselective Michael addition of cyclic ketones to 2-nitrovinyl arenes. The highest selectivities are obtained when these catalysts are used in conjunction with protonic acids. Steric factors in the substrate and the size of
包含仲仲二胺基序的简单、手性、基于吡咯烷的二胺和三胺衍生物是环状酮与 2-硝基乙烯基芳烃高度非对映选择性和对映选择性迈克尔加成的有效催化剂。当这些催化剂与质子酸结合使用时,可获得最高的选择性。底物中的空间因素和酸添加剂的大小在立体选择中起着重要作用。