The reaction of aryl and heteroarylhydrazines with aryl-trifluoromethyl β-diketones
作者:Shiv P. Singh、Vinod Kumar、Ranjana Aggarwal、Jose Elguero
DOI:10.1002/jhet.5570430428
日期:2006.7
We report the results obtained when five aromatic or heteroaromatic hydrazines react with six β-diketones bearing trifluoromethyl and aryl substituents. Forty-two compounds have been isolated corresponding to two isomeric trifluoromethyl pyrazoles and the intermediate 5-CF3, 5-OH pyrazolines. The results have provided useful information for establishing the mechanism of the synthesis of pyrazoles.
我们报告了当五个芳香族或杂芳香族肼与六个带有三氟甲基和芳基取代基的β-二酮反应时获得的结果。四十二个化合物已被分离出对应于两个同分异构的三氟甲基吡唑和中间体5-CF 3,5-OH吡唑啉。该结果为建立吡唑的合成机理提供了有用的信息。