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合成了形貌具有典型立方晶型结构的404有机担体负载磷钨酸,用这种新型负载型催化剂催化芳香醛与1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮的缩合反应,共合成了6种未见文献报道的吡唑啉酮衍生物,产物通过IR,1HNMR和元素分析表征。研究发现,404有机担体负载磷钨酸催化剂具有稳定的空间结构,分散性好,负载量稳定,对催化此类反应具有催化产率高、催化反应时间短、选择性高、不污染环境和催化剂能够重复利用等特点。
The 404 organic carrier supported phosphotungstic acid with the typical cubic crystal structure was synthesized. The novel supported catalyst was used to catalyze the reaction of aromatic aldehydes with 1-phenyl-3-methyl-4-benzoyl-5-pyrazole 6 kinds of pyrazolone derivatives were synthesized. The products were characterized by IR, 1HNMR and elemental analysis. It was found that the supported organophosphorus tungstic acid catalyst 404 has a stable spatial structure, good dispersibility and stable loading, and has the advantages of high catalytic yield for catalysis of such reactions, short reaction time, high selectivity, non-polluting environment and catalyst Can be reused and so on.