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Gallium ( Triflate an efficient catalyst for solvent free synthesis of dihydropyrimidinone derivates

YUAN CAI1,2,* , YULONG LI3,* , XIAOYAN YANG3, LIFE N JIANG3, BIN ZHANG3, LIJUN XUE3, LULU CHEN3

Affiliation

  1. Jiangsu Research and Development Center of Chemical Engi neering Applying Technology, Department of Chemical Engineering, Nanjing P olytechnic Institute , Nanjing 210048, P.R. China
  2. College of Chemical Engineering and State Key Laboratory of Materials Oriented Chemical Engineering, Nanjing Tech University, Nanjin g 210009, P.R. China
  3. Jiangsu Research and Development Center of Chemical Engi neering Applying Technology, Department of Chemical Engineering, Nanjing P olytechnic Institute, Nanjing 210048, P.R. China

Abstract

Dihydropyrimidione derivates were successfully synthesized by Gallium(III) triflate (Ga(OTf3)) catalyzed Biginelli type reaction using ethyl acetoacetate (or cycloketone), aldehyde and urea as reactant, respectively. The samples wer e characterized by 1 H NMR (400 MHz), HRMS, and Electrothermal Digital Melting-point. The results showed that the dihydropyrimidione derivates could be effectively catalyzed by using Ga(OTf) 3 to give the corresponding adducts in good to excellent yields und er solvent free condition..

Keywords

Ga(OTf)3, Biginelli reaction, Dihydropyrimidinone derivates.

Citation

YUAN CAI, YULONG LI, XIAOYAN YANG, LIFE N JIANG, BIN ZHANG, LIJUN XUE, LULU CHEN, Gallium ( Triflate an efficient catalyst for solvent free synthesis of dihydropyrimidinone derivates, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1565-1571 (2015).

Submitted at: Sept. 30, 2015

Accepted at: Oct. 28, 2015