反应详情

In a manner analogous to that described in Example 12, 2.7 g of 5-butyryl-6-chloro-1-methyl-benzimidazole-2-methanol are oxidised with 2.5 g of potassium permanganate to give 5-butyryl-6-chloro-1-methyl-benzimidazole-2-carboxylic acid with a melting point of 90° (decomposition).