氯乙酰苯

The processes for preparation of tribenuron-methyl and its key intermediates were reviewed. Comparing the yield, quality, cost, safety and environmental protection and other aspects, the best production process of tribenuron-methyl is to use the methyl 2-benzoate and sodium cyanate as raw materials.

综述了苯磺隆及其关键中间体的主要生产工艺，并对各生产工艺在收率、质量、成本、安全环保等方面进行了比较和评价，指出了以邻甲酸甲酯苯磺酰氯、乙腈和氰酸钠为原料的工艺是苯磺隆的最佳生产工艺。

The reducing-coupling reaction of benzoyl chloride under Dy/n-BuBr was complex. Besides diphenyl diketone, benzoin and ring-opening product of THF were also obtained.

苯甲酰氯在Dy/n-BuBr作用下的还原偶联反应较为复杂，除得到二苯基乙二酮外，还得到四氢呋喃开环产物以及安息香。

From 3-chloropropene bycondensation with sodium ethylate in ethanol to form 3-ethoxypropene followed by anti-Markovnikov addition with HBr inthe presence of benzoyl peroxide.

3-氯丙烯与乙醇钠在乙醇中回流制得3-乙氧基丙烯，继而在过氧苯甲酰存在下，与溴化氢经反马氏加成制得1-溴-3-乙氧基丙烷，总收率89。

We studied the effect of water on the palladium acetate-catalyzed coupling reaction of aryl boronic acid with aryl bromide or acyl chloride in ionic liquid or PEG, and found that water had a remarkable rate accelerating effect on the Suzuki reaction and Suzuki-Type reaction when other reaction conditions were uniform.

研究了水对离子液体或聚乙二醇中Pd2催化的卤代苯或苯甲酰氯与苯硼酸的Suzuki和Suzuki-Type偶联反应收率的影响。

Ethyl phenoxyacetate has been synthesised by the reaction of phenol with ethyl chloroacetate under the condition of solid-liquid phase transfer catalysis using PEG-400 as the catalyst.

于固一液相转移催化条件下，以PEG-400为催化剂，通过苯酚与氯乙酸乙酯反应合成了苯氧基乙酸乙酯。与85％的水合肼作用得到相应的酰肼。

Trans-3-phenylglycidate ethyl ester was prepared from benzaldehyde and ethyl chloroacetate through Darzens condensation reaction.

以苯甲醛和氯乙酸乙酯为原料，经Darzens 缩合反应合成了反式-3-苯基缩水甘油酸乙酯，然后在25℃以氨水开环得赤型-3-苯基异丝氨酰胺。

A novel fluorescent acrylamide monomer, N-(4-Benzooxazol-2-yl-phenyl)- acrylamide, was prepared from o-aminophenol, p-aminobenzoic acid and acryloyl chloride, with polyphosphoric acid as dehydrating agent and triethylamine as deacidification agent.

以邻氨基苯酚、对氨基苯甲酸和丙烯酰氯为原料，以多聚磷酸为脱水剂、三乙胺为脱酸剂，研制了一种新的荧光丙烯酰胺单体N-[4-（苯并噁唑-2-）苯基]丙烯酰胺。

To synthesize aryl pyrimidines by taking benzene, methyl benzene ,acetic ether,1,2-dichloroethane as solvent,the yield and purity of the product are high by taking methyl benzene as solvent.

分别选用苯、甲苯、乙酸乙酯、二氯乙烷作为溶剂合成桂皮酰哌啶，结果表明甲苯作为溶剂时产品纯度高，收率高，可用于大规模生产。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。