Nucleophilic additions of [(diethoxyphosphoryl)difluoromethyl]lithium to α,β-unsaturated compounds
作者:Prabhakar Cherkupally、Petr Beier
DOI:10.1016/j.jfluchem.2012.02.003
日期:2012.5
The presence of HMPA leads to an increase of 1,4- versus 1,2-additions of [(diethoxyphosphoryl)difluoromethyl]lithium onto alpha,beta-unsaturated ketones and provides products of conjugated addition in moderate to good yields. In the absence of HMPA, benzylidine or alkylidine 1,3-diones, malononitriles or malonates as well as nitroalkenes and other Michael acceptors give products of 1,4-addition in good to high yields. (c) 2012 Elsevier B.V. All rights reserved.