BURGER K.; MEFFERT A.; GIEREN A., J. LIEBIGS ANN. CHEM., 1978, NO 7, 1037-1051
作者:BURGER K.、 MEFFERT A.、 GIEREN A.
DOI:——
日期:——
Organocatalytic Diastereo- and Enantioselective Michael Addition Reactions of 5-Aryl-1,3-dioxolan-4-ones
作者:Peter S. Hynes、Daniela Stranges、Paul A. Stupple、Antonio Guarna、Darren J. Dixon
DOI:10.1021/ol070532l
日期:2007.5.1
derivatives and hexafluoroacetone have been identified as new and effective pro-nucleophiles in highly diastereo- and enantioselective Michael addition reactions to nitro olefins catalyzed by bifunctional epi-9-amino-9-deoxy cinchona alkaloid derivatives. Diastereoselectivities up to 98% and enantioselectivities up to 89% for a range of nitro olefins and 5-aryl-1,3-dioxolan-4-ones under mild reaction conditions