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Ghorbani-Vaghei, R. and Veisi, H. (2009) The Michael Addition of Indoles and Pyrrole to α, β-Unsaturated Ketones and Double-Conjugate 1,4-Addition of Indoles to Symmetric Enones Promoted by Pulverization-Activation Method and Thia-Michael Addition Catalyzed by Wet Cyanuric Chloride. Molecular Diversity, 14, 385-392.
https://doi.org/10.1007/s11030-009-9184-2

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.