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在 KF Al2 O3负载型固体碱催化下 ,1苯基 3甲基吡唑 5酮和对位不同取代基芳香醛进行缩合反应 ,合成了 1苯基 3甲基 4芳亚甲基吡唑 5酮 ,测定了 6个产物在 1 5种溶剂中的紫外光谱 ,其最大吸收频率与 Hammett取代基常数之间存在良好的线性关系 .
In KF Al2 O3 supported solid base catalysis, 1 phenyl 3 methyl pyrazole 5 ketone and the para-position of the different aromatic aldehyde condensation reaction, the synthesis of 1 phenyl 3 methyl 4 aryl methylene pyrazolone The UV spectra of six products in 15 solvents were determined. There was a good linear relationship between the maximum absorption frequency and Hammett substituent constants.