methyl 5-chloro-1-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylate 、
methyl 1-(4-chloro-1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylate 、 methyl 2-chloro-1-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylate 、
sodium hydroxide 在
dichloromethane hydrate 、
二氯甲烷 、
Sodium sulfate-III 作用下,
以
甲醇 、
四氢呋喃 为溶剂,
反应 12.0h,
以affording 5-chloro-1-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylic acid (111.6 mg, 0.495 mmol, 63.7% yield) as a white solid [as an inseparable mixture with 1-(4-chloro-1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylic acid (66.96 mg, 0.297 mmol, 38.2% yield) and 2-chloro-1-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylic acid (7.44 mg, 0.033 mmol, 4.25% yield)的产率得到5-chloro-1-(1-methyl-1H-pyrazol-5-yl)-1H-pyrrole-3-carboxylic acid