乙酰胺基

In this thesis,three copolymerization systems have been investigated in detail.They are α-ethylacrylic acid/maleimide,α- acrylic acid/maleimide and monomethyl itaconate/maleimide,respectively.

本文对α-乙基丙烯酸/马来酰亚胺、α-正丙基丙烯酸/马来酰亚胺和衣康酸单甲酯/马来酰亚胺三种新的共聚体系进行了详细地研究，并对合成共聚物的生理活性进行了初步探讨，实现了α-正丙基丙烯酸乙酯/马来酰亚胺体系的可控共聚反应。

Synthesis of Organic Pigmet Intermidiate N, N'- bisacetylaceto - 2 - methyl - 5 - chloro -1,4- Phenylenediamine

有机颜料中间体N，N′-双乙酰乙酰基2-甲基-5-氯代-1，4-苯二胺的合成

Amino-monomethoxypoly(ethy1ene glycol)(mPEG-NH2) was synthesized based on the principle of Gabriel synthesis.Monomethoxypoly(ethy1ene glycol) tosylate was prepared at first,and then reaction with potassium salt of phthalimide as nucleophile to produce the monomethoxypoly(ethy1ene glycol)phthalimide derivative.

摘 要：首先合成了单甲氧基聚乙二醇对甲苯磺酸酯，然后根据盖布瑞尔合成法原理，以邻苯二甲酰亚胺钾盐为亲核试剂与mPEG-OTs反应，生成单甲氧基聚乙二醇的邻苯二甲酰亚胺衍生物，mPEG-PI与水合肼反应肼解生成伯胺，合成了一端为氨基的单甲氧基聚乙二醇(mPEG-NH2)。

The hydrophobic core serves as a reservoir for water-insoluble drugs.Hence,these nanoparticles can be used as carriers for hydrophobic drugs.For the synthesis of cholesterol-modified glycol chitosan conjugates,a carboxyl group was initially introduced to cholesterol molecule using succinic anhydride,and then covalently coupled with the primary amino group of glycol chitosan in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride and N-hydroxyl succinimide.

本文采用二步反应将胆固醇接枝到乙二醇壳聚糖，首先将胆固醇进行羧基化，将胆固醇与琥珀酸酐反应生成胆固醇半琥珀酸酯，然后用1-乙基-3-(3-二甲基氨丙基)碳二亚胺盐酸盐与N-羟基琥珀酰亚胺作为偶联剂，将胆固醇半琥珀酸酯的羧基与乙二醇壳聚糖主链的氨基进行反应，得到胆固醇疏水改性乙二醇壳聚糖共聚物。

All of the tripodal schiff base ligands and their complexes were characterized.

以三乙醇胺、巯基苯胺、巯基乙胺为初始原料，设计合成了六个三脚架结构的化合物，其合成路线如下：三乙醇胺与氯化亚砜反应得到三(2-氯乙基)胺(1)，然后与巯基苯胺或巯基乙胺在碱性条件下反应生成三脚架结构的三{[2-(2-氨基苯基)硫代]乙基}胺(2)或三{[2-(2-氨基乙基)硫代]乙基}胺(3)，然后再与水杨醛、2-甲酰基-8-羟基喹啉(8)、2-甲酰基-8-苄氧基喹啉(7)反应得到六种新型的含硫西佛碱化合

The main by-product s and their separation and recovery technologies were discussed for cyclohexanone gas-phase Beckmann rearrangement.

探讨环己酮肟气相Beckmann重排主要副产物及其分离回收方法，研究1-氮杂-2-乙氧基-1-环庚烯、1，3，4，5-四氧吖庚因-2-酮及其同分异十句体等副产物回收利用生成已内酰胺的方法。

The determination of amino acids in blood clam antianaemia oral liquid using HPLC-AccQ-Tag method is reported. The oral liquid reacted with 6-aminoquinolyl-N-hydroxysuccini-mdyl carbamate. Then, the corresponding derivatives were analyzed with an HPLC. The chromatographic conditions were AccQ-TagTM C18 column for amino acids analysis (3.9mm×15cm); mobile phase of program elution sodium acetate solution(pH5.02), acetonitrile, Milli-Q water. The amino acids'AQC deriatives were detected at 248nm with a UV-detector. Eighteen kinds of amino acids were completely determined in 35 minutes.

以6-氨基喹啉-N-羟基琥珀酰亚胺基氨基甲酸酯为衍生剂，与毛蚶抗贫血口服液中的氨基酸柱前定量衍生，用WatersHPLC仪，AccQ-TagTM专用C18柱(3.9mm×15cm)，以140mmol·L-1的醋酸钠溶液(pH5.02)为溶剂A，乙腈为溶剂B，超纯水为溶剂C，进行梯度洗脱，检测波长为248nm，35min测试完毕。

Methods The amino acids in the injections were pretreated with 6-aminoquinolyl-N-hydroxysuccinimdyl separately and their derivatives were analyzed on Waters 2695 HPLC using AccQ-Tag column. Gradient eluents consisted of sodium acetate solution (pH 4.95), acetonitrile and water. The Detection wavelength was 248 nm and column temperature 37℃.

采用AccQ-Tag法，以6-氨基喹啉－N-羟基琥珀酰亚胺基甲酸酯为衍生试剂，与复方氨基酸注射液(18AA-V)中17种氨基酸柱前衍生，用Waters 2695 HPLC仪器，AccQ-Tag柱，以醋酸钠(pH 4.95)缓冲液为流动相A，乙腈为流动相B，水为流动相C进行梯度洗脱，检测波长为248 nm，柱温为37℃，进样量为5μL。

In this thermodynamic study, the minimum requirements in molar fraction of the solvents (x3) on the azeotropic feed plate are: 0.20 for N,N-dimethylformamide, 0.36 for 2-ethoxyethanol, 0.40 for 1-pentanol and 0.66 for butyl propionate,.

在这个热力学研究中，共沸混合物喂料盘上各溶剂摩尔分数最小值(x3)分别是：N，N-二甲基甲酰胺：0.20；2-乙氧基乙醇：0.36；1-戊醇：0.40；丙酸丁酯：0.66。

Three methods for the preparation of 1,2,4-trizolone~5 are provided. 22 compounds are prepared. 3, 4-disubstituted 1,2,4-trizolone-5 is prepared by reacting amide with ethyl hydrazine-fornate at 110癈 for 3h in the presence of phosphorus oxychloride, following neutralization and cyclization reaction, giving to 74.5 % yields,which is 30% more than the literature value.

以三氯氧磷为缩合剂，使酰胺和肼基甲酸乙酯在110℃反应3h，经碱中和、环化反应，合成3，4-二取代-1，2，4-三唑酮-5，两步反应总产率达74.5％，与文献报道值相比，高出了30％以上，在三唑酮类衍生物的合成方法中具有很大的突破性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。