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M. A. Chari, D. Shoda, T. K. Kumar and P. K. Dubey, “Bismuth (III) Nitrate Catalyzed One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-Ones: An Improved Protocol for the Biginelli Reaction,” Arkivoc, Vol. 2005, No. 15, 2005, pp. 74-80.

has been cited by the following article:

• TITLE: Phase Transfer Catalysis Improved Synthesis of 3,4-Dihydropyrimidinones

  AUTHORS: Hela Slimi, Khemaïs Saïd, Younes Moussaoui, Ridha Ben Salem

  KEYWORDS: Multicomponent Reaction; Biginelli Reaction; 3, 4-Dihydropyrimidinones; Phase-Transfer Catalysis; Quaternary Ammonium Salts

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.3 No.3A, November 28, 2013

  ABSTRACT: Various 3,4-dihydropyrimidinones can be prepared via Biginelli reaction in aqueous media by using quaternary ammonium salts of different alkyl groups (C4 and C8) and anions (Cl-and Br-) as catalysts. The use of quaternary ammonium salts along with longer alkyl chains increases the yield of the Biginelli reaction; however, bromide ammonium salts are less active than the chloride ones.