N-acetyl pyrazoles including 1-(3-(3,4-dichlorophenyl)-5-(substituted phenyl)-4,5-dihydro- 1 H-pyrazole- 1-yl) ethanones have been synthesised by solvent free cyclization cum acetylation of chalcones like substituted styryl 3,4- dichlorophenyl ketones using hydrazine hydrate and acetic anhydride in presence of catalytic amount of fly-ash: H2SO4 catalyst. The yield of these N-acetyl pyrazole derivatives
通过无溶剂环化合成了一些N-乙酰基
吡唑,包括1-(3-(3,4-二
氯苯基)-5-(取代的苯基)-4,5-二氢-1 H-
吡唑-1-基)乙酮。在催化量的粉煤灰:H2SO4催化剂存在下,使用
水合
肼和
乙酸酐对查尔
酮类(如取代的3,4-二
氯苯基
苯乙烯基酮)进行乙酰化。这些N-乙酰基
吡唑衍
生物的产率超过75%。合成的N-乙酰基
吡唑啉衍
生物具有物理常数和光谱数据特征