英语语法分析

In this paper, we reported a new method of bromination of acetophenone using potassium bromate in phosphoric acid. Some factors that effect yield are also discussed.

探讨了用溴酸钾— 磷酸体系溴化苯乙酮的溴化新方法，并讨论了影响反应收率的几个因素。

A detailed study for the synthesis of hexabromobenzene by means of direct bromination has been conducted, and some modifications to the classical method were proposed.

对直接溴化法合成六溴苯作了系统的研究，并对文献方法进行了一系列的改进。

The 3,4,5 trimethoxybenzaldehyde is synthesized from p cresol in four steps of bromination, hydrolyzation, methoxylation, and methylation, with an overall yield of 53.

以对甲酚为原料经溴化、水解、甲氧基化和甲基化4步反应合成药物中间体3，4，5-三甲氧基苯甲醛，总收率达53。