作者:Dun-Jia Wang、Yan-Fang Kang、Chun-Yang Zheng、Xian-Hong Wei
DOI:10.1007/s11164-012-0758-8
日期:2013.7
Some new 3,5-diaryl-1H-pyrazoles were prepared from aryl methyl ketones via Claisen condensation with aromatic esters and followed by cyclization with hydrazine monohydrate. Their structures were confirmed by IR, 1H NMR spectroscopy, mass spectrometry and elemental analysis. The X-ray structure for 3(5)-(4-tert-butylphenyl)-5(3)-(4-methoxyphenyl)-1H-pyrazole (2b) was presented. The results show that
一些新的3,5-二芳基-1 H-吡唑是由芳基甲基酮经克莱森与芳香族酯缩合制备的,然后与一水合肼环化。通过IR,1 H NMR光谱,质谱和元素分析确认了它们的结构。给出了3(5)-(4-叔丁基苯基)-5(3)-(4-甲氧基苯基)-1H-吡唑(2b)的X射线结构。结果表明,化合物2b以互变异构体I和II存在,其分子通过N–H··N分子间氢键连接,形成由互变异构体I和II组成的环状二聚体。