反应详情

2-Bromo-4,5-methylenedioxybenzaldehyde dimethyl-acetal, 3-methoxybenzaldehyde and dimethylacetylene-dicarboxylate are treated in the same manner as described in Example 1, whereby 1-(3-methoxyphenyl)-2,3-bis(methoxy-carbonyl)-4-hydroxy-6,7-methylenedioxynaphthalene is obtained.