A chiral pyrrolidine-pyrazole catalyst for the enantioselective Michael addition of carbonyls to nitroolefins
摘要:
An enantioselective Michael reaction of carbonyl compounds to nitroolefins has been accomplished using a novel chiral pyrrolidine-pyrazole catalyst. This newly prepared catalyst was found to be very effective in providing good yields as well as good diastereo- and enantio-selectivities. The mechanism of the reaction has also been substantiated by mass spectral studies. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] NOVEL BETULINIC SUBSTITUTED AMIDE DERIVATIVES AS HIV INHIBITORS [FR] NOUVEAUX DÉRIVÉS D'AMIDE SUBSTITUÉS BÉTULINIQUES UTILISÉS COMME INHIBITEURS DU VIH