Asymmetric direct α-alkylation of 2-oxindoles with Michler's hydrol catalyzed by bis-cinchona alkaloid–Brønsted acid via an SN1-type pathway

Tao Zhang, Zhen Qiao, Yan Wang, Nengjun Zhong, Li Liu, Dong Wang, Yong-Jun Chen
  • Chemical Communications, January 2013, Royal Society of Chemistry
  • DOI: 10.1039/c3cc39012h