Cinchona alkaloid-based phosphoramide catalyzed highly enantioselective Michael addition of unprotected 3-substituted oxindoles to nitroolefins

Miao Ding, Feng Zhou, Yun-Lin Liu, Cui-Hong Wang, Xiao-Li Zhao, Jian Zhou
  • Chemical Science, January 2011, Royal Society of Chemistry
  • DOI: 10.1039/c1sc00390a