反应详情

From the reaction of 3-hydrazinobenzenesulfonic acid and ethylbutyrylacetate, 3-(4,5-Dihydro-5-oxo-3-propyl-1H-pyrazol-1-yl)-benzenesulfonic acid is obtained. Subsequent reaction with 2-ethylaniline yields 3-(4-(2-ethylanilinomethylene)-4,5-dihydro-5-oxo-3-propyl-1H-pyrazol-1-y 1)-benzenesulfonic acid, Mp 258.6° C.