Pyrrolidine-Based Organocatalysts for Enantioselective Michael Addition of Cyclohexanone to trans-β-Nitrostyrene
作者:Jeremy Kilburn、Allison Carley、Sally Dixon
DOI:10.1055/s-0029-1216885
日期:2009.8
A series of readily prepared bifunctional catalysts promote the Michael addition of cyclohexanone to trans-β-nitrostyrene with excellent asymmetric induction. The enantioselection (up to 97%) and diastereoselection (up to 95:5) is comparable to other pyrrolidine-thiourea organocatalysts recently reported, however, reaction times are often shorter.
一系列易于制备的双功能催化剂促进了环己酮与反式-β-硝基苯乙烯的迈克尔加成,具有优异的对映选择性(最高可达97%)和差向选择性(最高可达95:5),与最近报道的其他吡咯烷-硫脲有机催化剂相当,然而反应时间通常较短。