查询词典 benzyl chloride

The effects of catalyst amount, mole ratio of sodium benzoate and benzyl chloride, reaction time on the esterification rate were studied.

考察了催化剂用量、釜残液与氯化苄的物质的量的比和反应时间对收率的影响。

Methoxystilbene and 2-methoxy-4'-nitrostilbene were synthesized from benzyl chloride and nitrobenzyl chloride by the Wittig reaction, and used as intermediates for the synthesis of the final product fluorescent whitener FP4,4'-bis(2-methoxystyrylbiphenyl via reduction and diazotisation of the latter followed by reaction with the former in the presence of NaOH.

以氯化苄和对硝基氯苄为原料，经Wittig反应合成中间体：2-甲氧基-二苯乙烯和2-甲氧基-4'-硝基-二苯乙烯。后者经还原反应、重氮化反应后，在氢氧化钠存在下与前者反应生成最终产品荧光增白剂FP4，4'-双-2-(甲氧基苯乙烯基联苯。为该类荧光增白剂的合成开辟了一条新路线

The study on the technology and kinetics of chlorination of benzyl chloride is rather essential to the design of reactive distillation column in that the new technology about combination of reaction and distillation is used in the production of benzal chloride.

因为拟采用新型反应精馏耦合技术进行苄叉二氯的生产，研究氯化苄氯化工艺和动力学对于反应精馏塔的设计很有必要。

Using benzyl chloride and chlorine as starting materials, benzal chloride is prepared through photo-chlorination in loop reactor.

采用环流反应器、以氯化苄和氯气为原料进行光氯化反应，制备苄叉二氯；将制得的苄叉二氯粗品进行真空精馏得到高纯度的精品；然后用一种新型醇胺类相转移催化剂，分别以盐酸和水作为介质，在 90～ 110℃水解后得到了高纯度的苯甲醛。

Based on broad information collection, author compared and studied on the old synthesis process, and proposed the better process that started from benzyl chloride, then according to the sequence of " synthesis of benzylamine, synthesis of N-benzyl-N--acetamine, synthesis of 2-chloro-5-methylpridine ,2-chloro-5-trichloromethylpyridine,2-chloro-5-trifluropyridine " five steps to get the final product, CTFP.

本文在查阅大量文献资料和对2-氯-5-三氟甲基吡啶合成路线进行分析比较的基础上，提出了较佳合成路线，即以氯化苄为原料，合成的反应步骤为&苄胺&合成、&N-苄基-N--乙酰胺&合成、&2-氯-5-甲基吡啶&合成、&2-氯-5-三氯甲基吡啶&合成、&2-氯-5-三氟甲基吡啶&合成五步。

In this article, the preparation of benzyl 4-hydroxybenzoate in water was reported, with 4-hydroxybenzoic acid and benzyl chloride as main raw materials, cetyl trimthylamonium bromide as phrase transfer catalyst.

采用改进工艺，以正十六烷基三甲基溴化铵为相转移催化剂，水为溶剂，对羟基苯甲酸和氯化苄为主要原料，合成对羟基苯甲酸苄酯。

Benzyl phenylacetate was synthesized by benzyl chloride with the salt prepared by phenylacetic acid and Na2CO3 under microwave irradiation and in presence of phase transfer catalyst without any organic solvent and inorganic carrier.

采用微波辐射相转移催化技术，以四丁基溴化铵为相转移催化剂，先将苯乙酸与碳酸钠成盐，在无有机溶剂和无机载体的条件下与氯化苄直接酯化合成苯乙酸苄酯。

The p-tolyl benzyl ether was synthesized by reaction of p-cresol and benzyl chloride in 95% ethanol as solvent and under microwave irradiation.

以95%的乙醇为溶剂，以氯化苄和对甲苯酚为原料利用微波辐射加热合成对甲苯基苄基醚。

Using phenol and benzyl chloride as raw materials and N,N-dimethyl formamide as solvent, benzyl phenyl ether was synthesized under microwave radiation.

采用微波辐射技术，以苯酚、氢氧化钾和氯化苄为原料，N，N-二甲基甲酰胺为溶剂合成了苄苯醚。

Benzyl butyrate was prepared by phase transfer catalysis of butyric acid with benzyl chloride in the presence of ben zalkonium bromide as a catalyst.

以丁酸和氯化苄为原料，以新洁而灭为相转移催化剂合成了丁酸苄酯。

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。