反应详情

Using 2-hydrazino-5-methyl-1H-benzimidazole (4) obtained in Example 1, step 3 and ethyl 2-acetyl-3-[(1,1-dimethylethyl)phenyl]propanoate (41), and by a method similar to that in Example 1, step 4, 4-[[(1,1-dimethylethyl)phenyl]methyl]-3-methyl-1-(5-methyl-1H-benzimidazol-2-yl)-1H-pyrazol-5-ol (42) was obtained.