简要介绍以此类方法对合成苯甲醛的研究.Based on the reactions , this paper reports research for synthesizing benzaldehyde.再溴代得到2-溴 -4,5-二甲氧基苯甲醛,收率为91.9%,并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性.This product with Br 2 was obtained 2 - bromo - 4,5 - hydroxy...
正如如我的明 - 李的房间是描画的软蛋壳白色的.Just as mine Ming - Lee's room was painted soft eggshell white.他们不会和已经给他们描画的布告相配.They're not going with placards already painted for them....