Direct asymmetric Michael addition of ketones to chalcones catalyzed by a hydroxyphthalimide derived triazole–pyrrolidine
作者:Togapur Pavan Kumar、Mohammad Abdul Sattar、Vanka Uma Maheshwara Sarma
DOI:10.1016/j.tetasy.2013.11.002
日期:2013.12
An efficient protocol for the enantioselective Michael additions of ketones to chalcones catalyzed by a hydroxyphthalimide linked triazole-pyrrolidine derivative has been developed. The corresponding products, 1,5-dicarbonyl compounds, were obtained in good yields with high levels of stereoselectivities under mild reaction conditions employing benzoic acid as an additive. (C) 2013 Elsevier Ltd. All rights reserved.