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J. Witherington, V. Bordas, A. Gaiba, N. S. Garton, A. Naylor, A. D. Rawlings, B. P. Slingsby, D. G. Smith, A. K. Takle and R. W. Ward, ,“6-Aryl-pyrazolo[3,4-b]py- ridines: Potent Inhibitors of Glycogen Synthase Kinase- 3(GSK-3),” Bioorganic & Medicinal Chemistry Letters, Vol. 13, No. 18, 2003, pp. 3055-3057. doi:10.1016/S0960-894X(03)00645-0

has been cited by the following article:

• TITLE: Synthesis of Novel Bis-enaminones by KHSO4-assisted Facile Michael Addition-elimination Reaction of 3-(dimethylamino)-1-phenylprop-2-en-1-ones with Diamines in Water

  AUTHORS: Asem Satyapati Devi, Philippe Helissey, Jai Narain Vishwakarma

  KEYWORDS: Enaminone, Bis-enaminone, Formylated Acetophenone, Michael Addition-Elimination, Formylation, Dimethylformamide-dimethylacetal

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.1 No.2, April 13, 2011

  ABSTRACT: 3-(Dimethylamino)-1-phenylprop-2-en-1-ones (formylated acetophenones) 1 reacted with aliphatic diamines in water assisted by KHSO4 to give bis-enaminones 2a-h in good yields. Compound 1 also reacted with o-phenylenediamine under similar conditions to produce bis-enaminones 3 instead of benzodiazepines 4 in excellent yields.