乙酰胺

Technical characteristics and existing problems of cyanide-free silver plating technology were summarized through the analysis of cyanide-free silver plating systems of thiosulfate,succinimide,iodide,hydantoin,sulfite and others.

通过对硫代硫酸盐、丁二酰亚胺、碘化物、乙内酰脲、亚硫酸盐以及其它无氰镀银体系的分析，总结了当前无氰镀银工艺的技术特点及存在的问题，并阐述了无氰镀银技术的发展历程和研究现状。

After tail iv injection, the blood exposure time of stealth liposomes and the area under blood drug concentration-time curve were pronouncedly increased, compared with the regular liposomes group and the free doxorubicin group,respectively.

以化学梯度法包封脂质体，用两亲性聚乙二醇-二硬脂酰磷脂酰乙醇胺对脂质体膜进行修饰以制备隐形脂质体；用HPLC-UV法测定给药后小鼠体内组织中的药物浓度。

Benzyloxy benzoyldimethylsulfoxide was prepared by the reaction of ethyl 4-benzyloxybenzoate and dimethyl sulfoxide in the presence of sodium hydride, followed by Pummerer reaction with concentrated hydrochloric acid to afford eo-hydroxy-co-thio-methyl-(4/-benzyloxy) acetophenone, which reacted with urea, thiosemicarbazide, semicarbazide hydrochloride and o-phenylenediamine to give imidazolidine-2,4-dione, l,2,4-triazine-3- one and quinoxaline derivatives, respectively.

本文用4-苄氧基苯甲酸乙酯和二甲亚砜为原料，在氢化钠存在下反应，合成了(4′-苄氧基)-苯甲酰基-二甲亚砜。研究了该亚砜在浓盐酸的存在下发生的Pummerer重排反应，用重排产物ω-羟基-ω-甲硫基-(4′-苄氧基)-苯乙酮分别与尿素、氨基脲、氨基硫脲和邻苯二胺反应合成了2，4-咪唑啉-二酮、1，2，4-三嗪-3-酮、喹喔啉等含氮杂环化合物。

By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐为起始原料，经酰基化、关环和磺化三步反应合成了3-十二烷基蒽醌磺酸；并进一步改进和优化了合成工艺条件：即在催化剂三氯化铝过量50%并有三乙胺存在的条件下，中间体2-（4-十二烷基苯甲酰基）苯甲酸收率为72.45%；关环反应采用氯仿作溶剂，利用类似分水器的装置有效控制反应温度以减少碳化，2-十二烷基蒽醌的收率为68.1%。

In this research, liposoluble chlorogenic laurate was synthesized by acylation with lauroyl chloride in the presence of triethylamine in non-water phase.

本研究对CGA进行了分子修饰，即在非水相中，以三乙胺为催化剂，对其进行月桂酰氯酰化，制备了脂溶性的绿原酸月桂酸酯。

The key intermediate 3-methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods,formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction,and then hydr...

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The key intermediate 3- methylaminopiperidine was synthesized from 3-methylaminopyridine by two methods, formylation and lithium aluminium hydride reduction or condensation with triethyl orthoformate and sodium borohydride reduction, and then hydrolysis.

以3-氨基吡啶为原料，分别通过甲酰化反应、氢化铝锂还原和原甲酸三乙酯缩合、硼氢化钠还原两种方法得到3-甲胺基吡啶，最后经催化氢化得到中间体3-甲胺基哌啶。

The pegylated polylactide-poly glycolide nanoparticle, whose surface was co-modified withmaleimide-polyethylene glycol and methoxy-polyethylene glycol, was made by double-emulsion and solvent evaporation method andcovalently conjugated with thiolated lactoferrin via its maleimide functionalgroup.

第一章首先由复乳／溶媒蒸发法制备马来酰亚胺—聚乙二醇(Maleimide-PEG，MAL-PEG)和甲氧基聚乙二醇表面共修饰的聚乳酸-聚羟基乙酸纳米粒，然后通过其表面MAL-PEG与巯基化Lf共价连接而制备Lf-NP_。

Triphosgene ; carbamic acid ethyl ester ; phthalimide

三光气；胺基甲酸乙酯；邻苯二甲酰亚胺

In the third step, when the ratio of racemic ester to benzenesulfonyl chloride to triethylamine to catalyst 4-DMAP is 1:1:1:0.1 in 10℃, the yield is 82.9% and high purity is obtained by crystallisation.

在第三步磺酰化反应中，得到合成消旋2-苯磺酸基-2(2-氯苯基)乙酸甲酯的较佳反应条件为邻氯扁桃酸甲酯：苯磺酰氯：三乙胺=1：1：1，催化剂4-DMAP用量为摩尔反应物的10%，反应温度为10℃，收率为82.9%，同时用结晶方法获得高纯度的产物。

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。