期刊
POLISH JOURNAL OF CHEMICAL TECHNOLOGY
卷 22, 期 2, 页码 20-33出版社
SCIENDO
DOI: 10.2478/pjct-2020-0013
关键词
nanocatalyst; synthesis of tricyclic; carboxylate; efficient heterogeneous
资金
- National Natural Science Foundation of China [51903055]
- Sheng Tongsheng innovation funds [GSAU-STS-1721]
- Scientific research start-up funds for openly-recuited doctors [GSAU-RCZX201714]
SCMNPs@Uridine/Zn is utilized as an environmental-friendly and efficient heterogeneous nanocatalyst for two one-pot four-component condensation reactions, containing hydrazine hydrate, arylaldehyde, ethyl acetoacetate, and barbituric acid to yield tricyclic fused pyrazolopyranopyrimidine derivatives (5a-q), and hydrazine hydrate, arylaldehyde, malononitrile, and dimethyl acetylenedicarboxylate/diethyl acetylenedicarboxylate to yield 3-methyl carboxylate substituted pyrano[2,3-c]pyrazole derivatives (8a-y) under solvent-free conditions with high to excellent yields. The main advantages of this process are easy work-up, short reaction times, no chromatographic purifications, and recyclability of the catalyst for a minimum of six runs without any significant decrease in yields of the products. Also, the prepared catalyst SCMNPs@Uridine/Zn was synthesized and fully characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray (EDX), thermogravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and Raman spectroscopy.
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