Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (1): 44-50.DOI: 10.19894/j.issn.1000-0518.190334

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Synthesis of Cyclopenta[d]pyrimidinones and Hexahydroquinazolinones Catalyzed by Activated Carbon Supported Sulfuric Acid

REN Li-Lei*, XIAO Li-Wei*, LIU Guang-Xian, XU Ming-Ming   

  1. Faculty of Chemistry and Material Science, Langfang Normal University, Langfang 065000, China
  • Received:2019-12-13 Revised:2020-09-30 Published:2021-01-01 Online:2021-02-01
  • Supported by:
    Educational Commission of Hebei Province (No.ZD2020153) and the Science and Technology of Langfang (No.2019011018)

Abstract: An activated carbon supported sulfuric acid catalyst (H2SO4/AC) was prepared and characterized by Fourier transform infrared (FT-IR) spectrometry and X-ray diffraction (XRD). Various cyclopenta[d]pyrimidinones and hexahydroquinazolinones were synthesized by the reaction of aromatic aldehyde with urea and cyclopentone(cyclohexanone) catalyzed by H2SO4/AC in the absence of solvent. This method is simple and environmentally benign. The catalyst can be easily recovered and its activity maintains after being reused for 3 times.

Key words: Activated carbon supported sulfuric acid, Cyclopenta[d]pyrimidinones, Hexahydroquinazolinones, Multicomponent reactions

CLC Number: