反应详情

In a manner analogous to that described in Example 5, starting from 26.6 g of aluminium trichloride, 9.61 g of 5-methoxybenzocyclobutene-1-carboxylic acid methyl ester and 17.56 g of p-cyanobenzoyl chloride there is obtained 4-(p-cyanobenzoyl)-5-hydroxybenzocyclobutene-1-carboxylic acid methyl ester having a melting point of 113°-114°.