Xu, R., Ding, J.C., Chen, X.A., Liu, M.C. and Wu, H.Y. (2009) Gallium Trichloride-Catalyzed Conjugate Addition of Indole and Pyrrole to α, β-Unsaturated Ketones in Aqueous Media. Chinese Chemical Letters, 20, 676-679.
https://doi.org/10.1016/j.cclet.2009.01.028

has been cited by the following article:

• TITLE: Conjugate Addition of Indoles to α,β-Unsaturated Ketones Using Bismuth (III) Bromide

  AUTHORS: Tyler J. Rauwolf, Zhijia Geng, Zachary P. Kinney, Jared L. Renfroe, Jack H. Roireau, Lauren T. Yep, Ram S. Mohan

  KEYWORDS: Bismuth, Bismuth Bromide, Conjugate Addition, Green Chemistry, Indoles

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.9 No.3, July 18, 2019

  ABSTRACT: An efficient method for the conjugate addition of indoles to a variety of chalcones using BiBr3 in ethanol (190 proof) is reported. Products are isolated by a simple procedure that avoids an aqueous work up and extensive chromatography, thus minimizing waste. Bismuth (III) compounds are especially attractive from a green chemistry perspective because they are remarkably nontoxic, non-corrosive and relatively inexpensive.