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.