反应详情

6-Chloroveratraldehyde is treated with boron tribromide as described in Example 4 to give 6-chloroprotocatechualdehyde as a white solid, m.p. 217°-218°C. which is dibenzylated to give 6-chloro-3,4-dibenzyloxybenzaldehyde, m.p. 100°-102°C.