反应详情

By reaction of 17.3 g (0.075 mol) of (3,4-dihydroxy-6-methylphenyl)-(3-pyridyl)-methanone with 16.5 g (0.075 mol) of dibromoacetic acid, analogously to Example 3, there is obtained 5-methyl-6-nicotinoyl-1,3-benzodioxole-2-carboxylic acid as sand-coloured crystals, m.p. 250°-232° C. (from dimethyl sulfoxide/water).