脲基

The quality and inhibition efficiency of thiourea, allylthiourea and phenylthiourea self-assembled films were studied by electrochemical impedance spectroscopy and polarization curves, respectively.

利用电化学阻抗谱和极化曲线研究了硫脲、烯丙基硫脲、苯基硫脲在金属铜表面上的自组装膜的质量和缓蚀效率，并通过量子化学计算进一步研究了各种分子和金属铜的相互作用。

This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.

论文的主要内容如下：1、简要介绍本论文工作的研究背景，并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物，利用紫外光谱和气相色谱确定了此类化合物较佳光照时间，测定了一个具有代表性光解产物的单晶结构，提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物，测定了两个具有代表性化合物的单晶结构。

N,N′-Disubstituted ureas,used as intermediates for synthesis of pesticides,resin precursors and carbamates,were synthesized from carbon dioxide and primary amines(namely n-propylamine, n-butylamine ,n-amylamine,n-hexylamine,benzylamine and aniline) over organic base catalysts.

以正丁胺为反应基质、TBD为催化剂，合成N，N′-二丁脲的最佳反应条件为：反应温度180℃，CO2压力10.0M Pa，反应时间10h，TBD摩尔分数5.0%；在此条件下，N，N′-二丁脲的收率为81.8%；红外光谱表征结果表明，合成的产物为N，N′-二丁脲。

The famciclovir was synthesized from purine by a series of steps by Acylation, Decarboxylation, Reduction ,and so on; Derivatives of these intermediates is described from the 6-chloro- 9H- purin-2-amine as raw materials in different conditions when the iodine and bromide were synthesized with the addition of two intermediate 6-bromo-9H-purin-2-amine and 6-iodo-9H-purin-2-amine; There is elaborated from the main part of a acetophenone, urineaminohydrochloride, phenylhydrazine, ethyl acetoacetate as raw material through a series of reactions to synthetic 3-phenyl-4-formylphenyl pyrazole and 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-aldehyde two pyrazole aldehyde, and then with 2-amino-6-chlorine-9-(2-methicillin-oxo-co-methyl-4-yl) purine reaction of the two new pyrazole purine Schiff bases.

本论文主是采用以鸟嘌呤为原料，经过一系列的酰基化，脱羧，还原等反应作用下最终得到了产物2-氨基-9-(4-乙酰氧基-3-乙酰氧基甲基丁基)嘌呤；其中的中间体衍生物主要是阐述从以2-氨基-6-氯鸟嘌呤为原料通过在不同的条件下进行溴代与碘代分别合成了另外两种中间体2-氨基-6-溴鸟嘌呤及2-氨基-6-碘鸟嘌呤；还有一部分主要是阐述从以苯乙酮，盐酸氨基脲，苯肼，乙酰乙酸乙酯为原料通过一系列的反应先合成3-苯基-4-醛基吡唑及5-氯-3-甲基-1-苯基-1H-吡唑-4-甲醛这两个吡唑醛，然后再与2-氨基-6-氯-9-(2-甲氧羰基丁酸甲酯-4-基)嘌呤反应得到了两个新型的吡唑嘌呤席夫碱

Take the melting point of the dry solid semicarbazone derivative and record the yield. If it is necessary to recrystallize the semicarbazone derivative, you may do so from an ethanol/water mixture.

测定干燥的缩胺基脲衍生物的熔点，并记录其产量，如果有需要将缩胺基脲衍生物进行再结晶的话，你可以用乙醇/水的混合物来进行。

Take the melting point of the dry solid semicarbazone derivative and record the yield. If it is necessary to recrystallize the semicarbazone derivative, you may do so from an ethanol/water mixture.

测定乾燥的缩胺基脲衍生物的熔点，并记录其产量，如果有需要将缩胺基脲衍生物进行再结晶的话，你可以用乙醇/水的混合物来进行。

The obtained terephthalaldhydic acid semicarbazone has such advantages as simple process and high purity (above 99% after post treatment), and can be used as standard in enzymoimmunoassay of semicarbazide.

本发明成功合成了呋喃西林代谢物氨基脲的衍生物氨基脲缩对醛基苯甲酸，合成步骤简洁，经过后处理，纯度高达99％以上，完全可以用作标准品，为以后人们对氨基脲的酶联免疫检测研究提供了方便的途径，可以满足国内对其研究的需要。

The method comprises: reacting semicarbazide and terephthalaldhydic acid under stirring, and monitoring the end point with silica gel thin layer chromatography to obtain terephthalaldhydic acid semicarbazone.

本发明以氨基脲为原料，在搅拌下与对醛基苯甲酸反应，用硅胶薄层层析法监测反应终点，合成氨基脲缩对醛基苯甲酸。

Thiadiazole ; acyl urea; acyl thiourea; synthesis; plant growth regulating activity; auxin activity; cytokinin activity

1； 3； 4-噻二唑；酰基脲；酰基硫脲；合成；植物生长调节活性；生长素活性；细胞分裂素活性

N-guanylurea dinitramide was synthesized with N-guanylurea hydrochloride as primary substance by hydrolysis and double decomposition reaction in turn and the overall yield of GUDN is 79%.

以盐酸脒基脲为原料，通过水解、复分解反应，合成了N-脒基脲二硝酰胺盐，总收率可达79%。

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。