反应详情

In a manner analogous to that described in Example 12, 5.2 g of 1-ethyl-5-butyryl-6-methyl-benzimidazole-2-methanol can be oxidised with 4.5 g of potassium permanganate to give 1-ethyl-5-butyryl-6-methyl-benzimidazole-2-carboxylic acid with a melting point >80° (decomposition).