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胺化

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The progress in the catalytic amination of bifunctional alcohols to diamines or cyclic amines is reviewed in this paper.

以乙醇和哌嗪催化胺化合成N-乙基哌嗪的反应为模型,对分子间醇的催化胺化反应进行了研究。

This paper reviews the recent progress of all kinds of reductive amination methods and their ap-plications in organic synthesis, particularly emphasis on the introduction to the reductive amination with high efficiency and high selectivity.

综述了近几年来各种还原胺化方法的研究进展及其在合成中的应用,尤其对高效和高选择性的还原胺化进行了重点介绍

Amination of fatty alcohols with dimethylamine catalyzed by hydrogeration-dehydrogenation catalysts is the main preparation process of the tertiary amines.

脂肪醇的催化胺化工艺技术的核心是脂肪醇的胺化催化剂。

The cellulose nitrate containing secondary amine group was prepared by one-pot method in two steps: etherification and amination.

以硝化纤维素为原料,经一锅法醚化和胺化 2步反应合成了仲胺型硝化纤维素。

Using completely PVD method, successively depositing doffing pellicle twain anhydride and diamine on the polishing glass substrate in the high vacuum environment, and then processing heat treatment in proper surrounding temperature., make sure twain anhydride and diamine form polymeric amic acid, and more ring-imidization.

采用全物理气相沉积方法,在高真空环境中将脱膜剂、二酐和二胺先后沉积于抛光的玻璃衬底上,然后在适当的环境温度中进行热处理,使二酐和二胺形成聚胺酸,并进一步环亚胺化

The results of FR-IR demonstrated that different imide time influence imide degree, and different solidifying temperature effecte thermal endurance.

通过红外光谱FT-IR分析亚胺化时间不同对亚胺化程度的影响;不同固化温度,对耐热性的影响,从而确定最佳合成工艺。

Through chloromethylated, aminate and hydrolytic reaction, OH-form quaternized PES-C membranes were synthesized.

通过氯甲基化、胺化、水解等反应,制得了OH型季胺化酚酞型聚醚砜阴离子交换膜。

The latices were stable ,thixotropic and monodisperse .The particle sizes range from 192 to 94 nm depending on the acrylamide fractions. The Hofmann reactions of these latices were carried out to introduce primary amines on the particle surface.

由于一直以来,丙烯酰胺-苯乙烯的共聚物胶乳只能用于制备两性胶乳,为了得到较高的胺化度,我们对不同单体配比的丙烯酰胺-苯乙烯共聚物胶乳进行Hofmann反应,探讨了丙烯酰胺在单体中所占的比例对Hofmann反应的影响。

Two kinds of polyimide films were prepared based on the ODA and ODPA in NMP through two-step thermal or chemical imidization process and characterized by the cone and plate viscosimeter, GPC, FTIR, DSC, TGA and strain properties tests.

以4,4'-二胺基二苯醚和3,3',4,4'-二苯醚四酸二酐为单体,采用两步法,分别经热亚胺化和化学亚胺化过程制备了两种聚酰亚胺薄膜,并对两种薄膜的性能进行了表征。

This research utilized the method of organic synthesis, researching different amounts and positions of hydroxy-substituted benzoic acid and serotonin into amide reaction, so as to produce a series of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10). Accordingly, this study conducts the following four tests. I. The activity of antioxidant and the experiment of ability to scavenge DPPH free radical, II. The ability of overall antioxidant—the activity of TEAC, III. The activity test of inhibit Tyrosinase, and IV. The study of absorbing UV / VIS Spectrophotometers. This study use trolox, arbutin, and octyl salicylate as the control groups, and to test the ability of anti-oxidation, the activity of inhibit Tyrosinase, and the ability of absorbing UV. This research ultimately intends to investigate the applied value of those compounds into cosmetics.

本研究主要利用有机合成的方法,将不同数量及不同位置的羟基取代苯甲酸化合物与色洛冬宁进行醯胺化反应后,得到一系列的多羟基取代之N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10),进行四种不同活性测试方法:一、清除DPPH自由基能力抗氧化活性测试;二、总抗氧化能力活性测试;三、抑制酪胺酸酶活性美白测试;四、紫外线/可见光光谱仪吸收测试,并以水溶性维生素E、熊果素、水杨酸辛酯当作对照组,探讨其抗氧化能力、抑制酪胺酸酶的活性能力与吸收紫外线能力,再进一步探讨其应用於化妆品上的价值。

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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。