Journal
TETRAHEDRON-ASYMMETRY
Volume 25, Issue 15, Pages 1129-1132Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2014.06.009
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Funding
- DST New Delhi [IFA12-CH-30]
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An efficient protocol for the asymmetric catalytic Michael additions of alpha,alpha-disubstituted aldehydes to nitroolefins with a pyrrolidine-pyrazole is described. The desired products gamma-nitrocarbonyl compounds possessing an all-carbon quaternary center, were obtained in good yields and with high levels of enantioselectivities under solvent-free reaction conditions, employing benzoic acid as an additive. (C) 2014 Elsevier Ltd. All rights reserved.
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