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。
METHODS The compound was synthesized through the reaction of cyclization, split, bromination et al and using 1,3-propyl bromide and ethyl acetoacetate as raw materials.
方法以1，3-溴丙烷与乙酰乙酸乙酯为原料经环合、开环、溴代等反应合成。
Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation, cyclization and bromination with total yield of 61%.
以2 -溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。
Many kinds of synthetic methods for imazamox are introduced. The industrialization of post-methoxy methylation-bromination will be the most possible in above mentioned methods.
介绍了多种合成方法，其中以“后甲氧甲基化-溴化法”最有希望工业化。
Memantine hydrochloride was synthesized from 1,3 dimethyladamantane by bromination, acetamidation with acetonitrile in sulfuric acid and hydrolysis with an overall yield of 67.8%.
以1，3-二甲基金刚烷为原料，经溴化、乙腈和硫酸的作用下乙酰胺基化、水解、成盐等反应及改进的后处理方法得到盐酸美金刚，总收率6 7。8%。
A quantitative analysis method-Thin layer chromatography-bromination-determine amine method was established for determining two active ingredients in the mixture of MTMC and phoxim.
速灭辛乳油是由速灭威和辛硫磷复配而成，采用薄层分离，分别用碱解定胺法和溴化法对两种有效成分进行定量分析。
The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.
考察了反应温度对苯环上溴代产物收率和色泽的影响以及溴素滴加速度对侧链光溴代产物收率的影响。
The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.
考察了反应温度对苯环上溴代产物收率和色泽的影响以及溴素滴加速度对侧链光溴代产物收率的影响。
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