二苯胺

In order to provide some scientific data for judging biological toxicity and bioavailability caused by heavy metals in sediments in Guilin, China, for the first time, the authors sampled sediments in different water areas in Guilin, and determined AVS by P-Amino dimethyl aniline dihydro chloride photometry through a set of acidification-ventilation-absorption AVS reaction unit, determined copper, lead, zinc, cadmium and nickel with tomic absorption spectrophotometry, mercury and arsenium with atomic fluorescence, and cipangopaludina cathayensis was selected as the tested species for bioavailability experiment.

首次以桂林水系沉积物为研究对象，通过酸化－吹气－吸收装置，用对氨基二甲基苯胺光度法测定沉积物中AVS含量，用原子吸收分光光度法测定SEM和间隙水中Cu、Pb、Zn、Cd、Ni含量，用原子荧光法测定Hg、As含量。

Bifluoro nitrobenzene was the raw material of synthesis of asymmetry chromotropic acid bisazo fluoroarsen reagent, By way of ammonia substitution, arsonation, reduction and coupled reactions, bisazo fluoroarsen was synthesized.

以2，4—二氟硝基苯为起始原料，经过氨取代、胂酸化、还原、偶联反应合成了偶氮氟胂Ⅰ，然后分别选择不同的取代苯胺与偶氮氟胂Ⅰ偶联，合成了一系列的不对称变色酸偶氮氟胂。

P-π conjugated polyamic acid was synthesized by the poly-condensation of benzoguanamine and pyromellitic dianhydride under microwave irradiation. Then PAA was grafted with different side-chain containing azobenzol groups through azo coupling reaction.

选取苯代三聚氰胺和均苯四酸二酐为单体进行微波辐射溶液聚合反应，所得的聚酰胺酸与对位取代基不同的苯胺重氮盐偶合接枝，从而合成了一系列新的具有三阶非线性光学活性的侧链型聚合物。

Off-line HPLC coupled with MS gives the result that 4-chlorophenyl urea and 2-chloro-N-(4-chlorophenyl) benzamide are two photoproducts. In comparison with their retention times and UV specta with those of standards, some other photoproducts identified are 2-chloro benzamide, 4-chlorophenyl urea and 4-chloro aniline.

收集光解产物各级分，采用直接进样法在MS上测得其中的二种光解产物为对氯苯基脲和N-邻氯苯甲酰胺：通过与标样在同样HPLC条件下的保留时间和UV吸收光谱相对照，证明产物中存在有邻氯苯甲酰胺、对氯苯基脲和对氯苯胺等。

The key step involves reduction-amination of benzamine and -acetonide glycealdehyde 20 synthesized from cheap and available ascorbic acid . The hydrolysis product of 21 condensed with triphosgene to get 6, key intermediates of Linezolid and Eperizolid. After a series of reactions, we got Linezolid and Eperizolid in reasonable yields and purity. The spectrum and 〓 values of compounds 6 and other intermediates were identical with literature reported.

我们以国内非常便宜易得的维生素C为原料合成得到-丙酮保护的甘油醛20，20和取代苯胺经还原胺化反应制备得到二噁烷21，21水解后与三光气缩合成环得到利奈唑酮和埃皮唑酮的关键中间体6.6经一系列的反应合成得到了利奈唑酮和埃皮唑酮。6及一些中间体的〓D值与文献报道的数据相吻合。

Benzoperoxide/N,N-dimethylaniline initiator system that can eliminate the danger of using MEKPO/Co salt system used in UPR at room temperature was studied in this paper.

采用过氧化苯甲酰/N，N-二甲基苯胺固化体系室温条件下对不饱和聚酯树脂进行固化，可以降低常用的过氧化酮/钴盐体系的危险性。

It is shown that as the third eomponent of the catalyst di-methylaniline is the best,tetramethylthiuram disulfide or triethylamine the next.and benzothiazole the worst.

结果指出，作为催化剂第三组分以二甲基苯胺的效果最好。催化体系中存在与磷酸相等克分子的水时催化活性较高。

The synthesis of poly{2-4-[bi(4-tetrabutylphenylamino]phenylphenylenenvinylene} was beginwith 4-tetrabutylbenzoic,through acylation、Hoffmann rearrangement、bromization、idionization、Ullmann reaction、bromization、condensepolymerization.

聚{2-[4-二(4-叔丁基苯胺基苯基]苯撑乙烯}是以对叔丁基苯甲酸为原料，经酰氯化、酰胺化、Hoffmann降解、碘化、Ullmann反应、溴化、缩聚反应得到。

Synthesis process of 2,6-dichloro-3-methylaniline was investigated 3-methylaniline was first N-acetylated with acetic anhydride,then treated with chlorosulphonic acid and ammonia yielding the 2-methyl-4--benzenesulfonic amide,which wasin turn deacetylated,chlorinated and hydrolyzed to the title compound.Hydrochloric acid was used instead of sodium hydroxide in deacetylation and sodium chlorate instead of hydrogen peroxide as oxidant in chlorination.

合成工艺2，6-二氯-3-甲基苯胺调查3-甲基首次N-乙酰与醋酸酐，然后与氯磺酸和氨产量 2-甲基-4--苯磺酰胺基，而擅转乙酰，氯化和水解的标题compound.hydrochloric酸代替氢氧化钠乙酰氯酸钠代替双氧水为氧化剂，加氯。

The molecule has a typical D-π-A structure with terminal units of electron donor and accepter groups. The triphenylamine group, as the electron donor, is connected to the oxadiazole group which is the electron accepter through the cinnamene group.

该分子具有典型的D-π-A型推拉电子结构，三苯胺基团作为给电子基通过苯乙烯共轭链桥接到吸电子基1，3，4-恶二唑基团。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。