Ni(II)−Bis[(<i>R</i>,<i>R</i>)-<i>N</i>,<i>N</i>‘-dibenzylcyclohexane-1,2-diamine]Br<sub>2</sub> Catalyzed Enantioselective Michael Additions of 1,3-Dicarbonyl Compounds to Conjugated Nitroalkenes
作者:David A. Evans、Daniel Seidel
DOI:10.1021/ja052935r
日期:2005.7.1
A highlyenantioselectiveMichaeladdition of 1,3-dicarbonyl compounds to nitroalkenes has been developed that employs a newly developed Ni(II)-(bis)diamine based catalyst. The reaction scope includes substituted and unsubstituted malonates, beta-ketoesters, and nitroalkenes bearing aromatic and aliphatic residues. Ease of synthesis of this complex is noteworthy.