5-[2-(2,3-dihydro-1H-inden-1-ylidene)ethyl]-4-[(2,2-dimethylpropanoyl)oxy]-1,2-dimethyl-1H-benzimidazole-6-carboxylate 在
lithium hydroxide 、
水 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.5h,
生成 ethyl 5-[2-(2,3-dihydro-1H-inden-1-ylidene)ethyl]-4-hydroxy-1,2-dimethyl-1H-benzimidazole-6-carboxylate 、 ethyl 5-[2-(2,3-dihydro-1H-inden-1-ylidene)ethyl]-4-hydroxy-1,2-dimethyl-1H-benzimidazole-6-carboxylate