反应详情

40.8 g of 2-(3,4-dimethoxy-α-hydroxybenzyl)-3,4,5-trimethoxybenzaldehyde dimethyl acetal and 17.0 g of diethyl acetylenedicarboxylate are treated in the same manner as described in Example 1-(3) to give 1-(3,4-dimethoxyphenyl)-2,3-bis(ethoxycarbonyl)-4-hydroxy-6,7,8-trimethoxynaphthalene. Yield: 43%