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...
" The wolf is not a desperado, but a scoundrel. "“ 狼不是亡命徒, 而是恶棍!" Melly, I wouldn't have that old desperado in my house,'said Scarlett crossly." 媚兰, 我是不愿意让这个老鬼待在我屋里, "思嘉气恼地说.Don't provoke me too far . My f...