4-(3-amino-2-hydroxy-phenyl)-thiophene-2-carboxylic acid hydrobromide 、
sodium nitrite 、
1-(2,3-dihydro-1H-inden-5-yl)-3-methyl-1H-pyrazol-5(4H)-one 、
碳酸氢钠 在
ice water 、
水 、
乙酸乙酯 、
(Z)-4-{2-hydroxy-3- [N'-(1-indan-5-yl-3-methyl-5-oxo-1,5-dihydropyrazol-4-ylidene)hydrazino]phenyl}thiophene-2-carboxylic acid 作用下,
以
盐酸 、
乙醇 为溶剂,
反应 17.33h,
以to obtain the title compound (Z)-4-{2-hydroxy-3-[N′-(1-indan-5-yl-3-methyl-5-oxo-1,5-dihydro-pyrazol-4-ylidene)-hydrazino]-phenyl}-thiophene-2-carboxylic acid 19d (45 mg, yield 28.7%) as a yellow solid的产率得到(Z)-4-{2-hydroxy-3- [N'-(1-indan-5-yl-3-methyl-5-oxo-1,5-dihydropyrazol-4-ylidene)hydrazino]phenyl}thiophene-2-carboxylic acid