二硝基苯

3-Nitrodiphenylamine is generally synthesized by the Ullmann condensation of N-（3-nitrophenyl） acetamide with bromobenzene.

摘 要：间-乙酰氨基硝基苯与溴苯发生Ullmann缩合反应是制备3-硝基二苯胺最常用的方法。

The raw materials used by the method are green chemicals dimethyl carbonate and p-nitrophenol, and the catalyst is NaY molecular sieve, activated aluminum oxide or activated carbon which is impregnated by alkali metals or alkaline-earth metal compounds.

本发明涉及到一种合成对硝基苯甲醚的方法，该方法所用的原料为绿色化学品碳酸二甲酯和对硝基苯酚，催化剂是经碱金属或碱土金属化合物浸渍过的NaY分子筛、活性氧化铝或活性碳。

In the reaction of substituted arylamine and sulfuric acid, and utilizes the feature of that said inert organic solvent is easy to form azeotrope with water to continuously deliver the water produced in the couse of reaction from the reactor.

本发明在取代芳胺与硫酸的反应中加入了一种惰性的有机溶剂，如：氯苯，二氯苯，三氯苯，硝基苯等，利用其易与水形成共沸物的特点，将反应生成的水不断地导出反应器。

We also develop intermediates such as 2,4-Dinitrobenzyl Chloride and Diphenyl Ether.

同时也自主生产 2，4-二硝基氯化苯、二苯醚等中间体。

Dimethylnitrobenzene was oxidized to 3-methyl-4-nitrobenzoic acid with oxygen in the presence of catalyst under high pressure. The yield of 3-methyl-4-nitrobenzoic acid is 50% under proper condition and is higher than the literature yield of 27%.

论文还研究了在常压和高压下催化氧化2，4-二甲基硝基苯合成3-甲基-4-硝基苯甲酸的工艺，在一定的条件下产率可以达到51.2％。

The experimental results from cyclic voltammetry and constant-potential electrolysis show that the mechanism of the reaction was two molecules and three steps electrochemical process with eight-electrons transferred: anion radical arose in the first step; two-electrons were transferred in the second step and accompanied with coupling reaction of radicals and protonation and dehydrate, the main product was azoxybenzene; two-electrons were transferred in the third step, and azobenzene was achieved.

研究结果表明，硝基苯在铂电极上的电还原反应为双分子八电子三步骤电化学过程：第一步反应为准可逆单电子转移步骤，产生阴离子自由基；第二步为二电子转移步骤，并伴有随后的双分子不可逆自由基偶合反应和快速质子化及脱水反应，主要产物为氧化偶氮苯；第三步是二电子转移产生偶氮苯的过程。

The recent advances in the main clean processes to synthesize diphenylmethane diisocyanates are reviewed, such as BTC method, condensation of aniline, reductive carbonylation of nitrobenzene, oxidative carbonylation of aniline, methoxycarbonylation of aniline, alcoholysis of N,N'-diphenyl urea and the coupling process.

回顾了清洁合成二苯甲烷二异氰酸酯的几种主要方法，如BTC法、苯胺缩和法、硝基苯还原羰基化法、苯胺氧化羰基化法、碳酸酯法、二苯基脲法和反应耦合法等合成路线。

The UHF/AMl calculations were applied to study the thermolyses of o- dimethylaminobenzoyl, o-dimethylamino-p-methylbenzoyl and o- dimethylamino-p-nitrobenzoyl azides.

采用UHF／AM1方法对2－二胺基苯甲酰叠氮、2－二甲胺基－3－甲基苯甲酰叠氮和2－二甲胺基－3－硝基苯甲酰叠氮的热分解反应进行了研究。

Synthetic nitro-musks are used in the most wide area recently and industrial crystallization is the most important process to separate solid mixtures such as perfumes. In order to develop new crystallization process to separate synthetic nitro- musks, the phase equilibrium of musk ketone, musk xylene and 1,3-dimethyl-2, 4- dinitro-5-tert- butyl benzene were studied.

合成硝基麝香是用量最大的合成麝香而工业结晶是分离香料等固体产品的重要方法，为了开发麝香体系结晶分离新工艺，本文首先研究了酮麝香、二甲苯麝香和1，3-二甲基-2，4-二硝基-5-叔丁基苯的相平衡关系。

The liquid phase oxidation of 2-nitrotoluene and 2, 4-dimethylnitrobenzene with air, oxygen or chemical oxidants were studied.

中文摘要：研究了2-硝基甲苯和2，4-二甲基硝基苯在液相条件下的空气／氧气氧化和化学氧化剂氧化。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失