反应详情

From the reaction of 4-pyridylhydrazine and ethylbutyrylacetate, 2,4-dihydro-5-propyl-2-(4-pyridyl)-3H-pyrazol-3-one is obtained. Subsequent reaction wvith 2-ethylaniline yields 4-(2-ethyianilinomethylene)-2,4-dihydro-5-propyl-2-(4-pyridyl)-3H-pyrazol-3-one, Mp 159.2° C.