查询词典 benzyl

The influences of solution concentration, potential, organic salt content (benzyl triethylammonium chloride), solution feeding rate, and diameter of capillary on the diameter of the fibers and its distribution were studied.

采用正交设计实验的方法，对溶液浓度、电压、有机盐含量、溶液供给速率、喷丝孔孔径5种因素与纤维直径和直径的多分数性之间的关系进行了研究。

The less rate of L acid at 1440cm-1 to total acid is, the more intensive the catalytic property is for reaction between benzene and benzyl chloride.

对于苯与氯化苄的反应，L酸1440cm(-1)附近吸收所占总酸量的比例越小，催化剂的催化性能越强。

On the basis of data of esterification between benzyl chloride and sodium formate with phase-transfer catalyst, three kinetics models were investigated, using the experimental data to validate the model, and the parallel-consecutive-reversible reaction network is determined.

实验测定了氯化苄与甲酸钠相转移催化酯化的动力学数据，对三种可能的动力学模型进行了分析比较，最终确定为平行-连串-可逆反应网络。

A novel type of photoalignment material based on the esterification reaction of 3,5-dihydroxyl benzyl alcohol and cinnamoyl chloride was firstly reported in this paper. The distinct property of this material is the nonlinear branch conformation and its polarity end with hydroxyl group.

通过在3，5-二羟基苯甲醇分子中的双酚基基团上引入双肉桂酰酯光敏基团的酯化反应，合成了一类新型的分子顶部为羟基极性基团，整个分子构型类似于树枝状的光敏小分子化合物。

The feasibility of electrocarboxylation of benzyl chloride has been investigated at silver cathode in CO2-saturated room-temperature ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4) solution for the first time.

在饱和了CO2的室温离子液体中，首次在银电极上研究了苄基氯电羧化的可行性。

Currently the batch process of chlorination and rectification is mainly applied in the production of benzyl chloride. A few continuous processes of chlorination and still rectification have been found.

工业上氯化苄生产大多采用歇釜式氯化、间歇精馏的方式，少数采用连续釜式氯化、连续精馏的方式。

The experiment consist of two parts :the first one research nucleophilic addition of m-dinitrobenzene, nucleophilic reagent is benzyl cyanide; the second one synthesize 2,4-dihydorxybenzophenone from 2,4-dichlorobenzophenone and NaOH.

实验分为两部分：第一部分研究了间二硝基苯的亲核加成反应，亲核试剂为苄基腈；第二部分是用2，4-二氯二苯甲酮与氢氧化钠反应制备2，4-二羟基二苯甲酮。

The olefmation of benzyl zinc bromides with aromatic aldehydes, which has some theoretical means and good application expectation, has good stereoselectivity and regioselectivity.

烯基化反应具有较好的立体选择性和区域选择性，具有一定的理论意义和较好的应用前景。

A chiral phase transfer catalyst, N-benzyl quinine bromide, was synthesized from natural chiral compound. And 2,5-bimethyl-4-(3-nitrobenzene)-1,4-bihydrogenation pyridine-3--4-methyl formate (viz. nitrendipine) was synthesized by this chiral phase transfer catalysis, and characterized by elemental analysis, infrared spectrum,1H nuclear magnetic resornace, and X-ray single-crystal diffraction.Key words: ammonium; chiral phase transfer catalyser; crystal structure

通过对天然手性物质进行修饰合成手性相转移催化剂N-苄基溴化奎宁，并对目标分子2，5-二甲基-4-(3-硝基苯)-1，4-二氢吡啶-3-甲酸乙酯-5-甲酸甲酯进行不对称催化合成，并通过红外光谱和核磁共振氢谱对化合物进行了表征，用X射线单晶衍射法测定了该化合物的晶体结构。

Using poly(benzyl-ether) dendrons with thiol functionalities and CNTs/CdS core-shell nanowires as reactants, using chloroform as solvent, through adjusting the temperature and time, soluble CNTs/CdS core-shell nanowires have been obtained.

采用带巯基的聚苯甲醚树枝状分子和CNTs/CdS核壳纳米线在有机溶剂中作用，通过调节反应时间和温度，成功制备了可溶性CNTs/CdS核壳纳米线结构。

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。