Singh Vinod K
Department of Chemistry, Indian Institute of Technology, Kanpur, India-208 016.
Org Lett. 2007 Mar 15;9(6):1117-9. doi: 10.1021/ol070082x. Epub 2007 Feb 23.
A chiral diamine was found to catalyze enantioselective addition of ketones to nitroolefins in aqueous/saline/organic media. The products were obtained with excellent diastereoselectivities (syn/anti = 99:1) and enantioselectivities up to 99%. The reaction could be facilitated using a mild acid. [reaction: see text]
发现一种手性二胺可在水/盐水/有机介质中催化酮对硝基烯烃的对映选择性加成反应。产物具有优异的非对映选择性(顺式/反式 = 99:1)和高达99%的对映选择性。使用温和的酸可促进该反应。[反应:见原文]