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.