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15. A. Shaabani, A. Bazgir and F. Teimouri, “Ammonium Chloride-Catalyzed One-Pot Synthesis of 3,4-Dihydro- pyrimidin-2-(1H)-ones under Solvent-Free Conditions,” Tetrahedron Letters, Vol. 44, No. 4, 2003, pp. 857-859.
http://dx.doi.org/10.1016/S0040-4039(02)02612-6

has been cited by the following article:

• TITLE: New Method for the Synthesis of 1-Methylimidazolium Trifluoroacetate and Its Application in Biginelli Reaction

  AUTHORS: Khan M. Hua, Thach N. Le

  KEYWORDS: Biginelli Reaction; Microwave Irradition; 1-Methylimidazolium Trifuoroacetate; Protic Ionic Liquid; Oxo-Monastrol; Ultrasonic Irradiation

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.3 No.4A, November 22, 2013

  ABSTRACT: A new method for the synthesis of 1-methylimidazolium trifluoroacetate ([Hmi]Tfa), a protic ionic liquid (PIL), under ultrasonic irradiation has been developed. In addition, the product [Hmi]Tfa was successfully employed as solvent and catalyst in Biginelli reaction to prepare 3,4-dihydropyrimidinones (DHPMs) in high yield under mild reaction conditions.