A facile synthesis of 3-aryl-4-pyrazoleacetic acids and of their 4,5-dihydro derivatives
作者:Maria M. Curzu、Gérard A. Pinna、Daniela Barlocco、Giorgio Cignarella
DOI:10.1002/jhet.5570270217
日期:1990.2
N-1-Unsubstituted-3-aryl-4-pyrazoleacetic acids and their 4,5-dihydro derivatives can conveniently be prepared by cyclization of 3-benzoyl-3-butenoic acids with hydrazine hydrate in acetic acid and subsequent treatment with bromine in acetic acid or, respectively, with diluted mineral acids.
N -1-未取代的-3-芳基-4-吡唑乙酸及其4,5-二氢衍生物可以方便地通过将3-苯甲酰基-3-丁烯酸与水合肼在乙酸中环化,然后在溴中用乙酸处理而方便地制备。酸或稀无机酸。