Studies on Synthesis, Phase Transfer Catalysis and Catalytic Mechanism of Polystyrene-Supported Polyethylene Glycol Benzyl Ether

Preparation of p-tolyl benzyl ether by phase transfer catalyst

相转移催化合成对甲苯苄醚

Benzyl alcohol is the most important aromatic alcohol. Nowadays benzyl alcohol is synthesized by the hydrolysis of benzyl chloride in the presence of alkali, but with almost 10-20% benzyl ether, the by-product.

苯甲醇是最简单的，也是最重要的芳香醇，目前合成苯甲醇主要是通过氯化苄直接碱性水解，但是现有方法的副产物二苄醚含量达到10%～20%。

The optimal conditions were found to be the molar ratio of benzyl chloride to OH group in bamboo 3, reaction temperature 80 ℃, and reaction time 2 h. It was found that the crystalline structure of the native ball-milled bamboo was damaged after benzylation modification.

适宜条件为：氯化苄对竹粉羟基的摩尔比3，反应温度80℃，时间2h。原本球磨竹粉在苄基化改性后结晶结构发生了破坏。

Synthesis and application of water soluble polysiloxane containing benzyl cationic group

含苄基阳离子基团的水溶性聚硅氧烷的合成及应用

The protecting benzyl group was removed subsequently by catalytic hydrogenation to give poly ( 5-hydroxymethyl-1,4-dioxan-2-one)( PHDON) with pendant hydroxyl groups. The polymers obtained were characterized by FTIR, 1H NMR, 13C NMR and GPC.

通过催化氢化去除苄基保护基得到聚（5-羟甲基-1,4-二氧六环-2-酮）（PHDON），并用FTIR、1H NMR、13c NMR和GPC等方法对聚合物进行了表征。

The material with benzyl group as the linker shows higher catalytic activity and enantioselectivity than the material with propyl group as the linker, which is mainly due to the spacial rigidity and electron-withdrawing ability of the benzyl group.

研究表明以苄基作为环己二胺联结链的材料的催化活性和光学选择性高于相应的以丙基为联结链所得的材料，这主要归因于苄基的空间刚性和较强的吸电子性质。

Using sodium cinnamate and benzyl chloride as raw material, diethylamine as catalyst, benzyl cinnamate is synthesized directly under normal pressure and microwave irradiation. The effects of amount of catalyst, power and time of microwave irradiation on yield are studied.

以肉桂酸钠和氯化苄为原料，二乙胺作催化剂，采用微波辐射技术，在常压下直接合成肉桂酸苄酯，考查了催化剂用量、微波辐射功率和辐射时间对酯产率的影响。

The method of catalytic synthesis of benzyl cinnamate with hexadecyl trimethyl ammonium chloride as phase transfer catalyst is studied. The factors influencing the reaction, such as amount of catalyst used, reaction temperature and time, molar ratio of sodium cinnamate to benzyl chloride are investigated.

以十六烷基三甲基氯化铵为相转移催化剂催化合成肉桂酸苄酯，考察了催化剂、温度、时间和物料配比等因素对反应的影响。

Benzyl cinnamate was synthesized by a two-step reaction: cinnamic acid reacted with thionyl chloride giving cinnamyl chloride and cinnamyl chloride was then reacted with benzyl alcohol giving benzyl cinnamate whose structure was characterized by IR, 1H NMR and MS.

第一步将肉桂酸制成肉桂酰氯，第二步将肉桂酰氯与苄醇反应制得肉桂酸苄酯。结构经IR，1H NMR和MS确证。

The result shows that, hexadecyl trimethyl ammonium chloride is an effective catalyst and under the optimal condition, 86.0% yield of benzyl cinnamate can be obtained.

实验结果表明，十六烷基三甲基氯化铵是一种有效的催化剂，在最佳反应条件下，产物收率可达86.0%。

The result shows that tetrabutylammonium bromide was an effective catalyst and the optimum conditions of preparation were determined with yield of benzyl cinnamate 85.3%.

实验结果表明：四丁基溴化铵是一个有效的催化剂，在最适宜的条件下，产物收率可达85.3%。

Microwave assisted synthesis of benzyl cinnamate catalyzed by NKC-9 macroporous resin

微波协同NKC-9大孔树脂催化合成肉桂酸苄酯

New process for synthesis of benzyl cinnamate

肉桂酸苄酯的合成新工艺

This experiment filtrates the benzyl penicillin strain with high yield by mutagenesis the benzyl penicillin strain No. 232 which available and used for the manufacture.

本试验通过用化学诱变剂对现有青霉素生产菌株232~进行诱变育种，筛选高产菌株。

Treatment with benzyl-penicillin are effective. Mutagenesis breeding of benzyl penicillin strain

青霉素治疗有效，未发现不良反应。青霉素产生菌的诱变育种

Benzyl penicillin potassium and other twenty-four antibiotic drugs were recognized using neural networks.

运用神经网络识别青霉素钾等24种抗生素药物的红外光谱。

This paper described the mechanisms of synthesis of benzyl acetate by tetranbutylammonium bromide in the presence of phase transfer catalyst, and such factors as temperature, time are also discussed.

该文描述了相转移催化剂存在时合成醋酸苄酯的机理，对反应温度、反应时间等因素也进行了讨论。

Benzyl Triphenyl Phosphonium Bromide;

苄基三苯基溴化磷；

For the synthesis ofp-nitrobenzoic acid by means of micelles catalytic oxidation, sodium dichromate is used as oxidant, and the best catalyst is found to be dodecyl dimethyl benzyl ammonium bromide.

考察了以重铬酸钠为氧化剂，胶束催化氧化合成对硝基苯甲酸的有关影响因素。

The reaction of tosylate or benzyl bromide containing stopper with 4,4 ′-bipyridine was carried out under solvent-free.

通过固相熔融的方法，使4,4′-联吡啶与磺酸酯或苄溴进行反应。