偶氮苯

3 Recently, we reported an efficient tin-free version of this reaction involving thiophenol for the preparation of cyclopentane derivatives through a 1,5-hydrogen transfer/cyclization sequence [Eq.(1); AIBN=azobisisobutyronitrile].

最近，我们报道了高效的、不使用锡试剂而使用苯硫酚的反应，这个反应是通过1，5-氢转移/环化步骤制备环戊烷衍生物的[化学反应式(1)；AIBN=偶氮二异丁腈][4]。

Methods:Phenobarbital and Valproic acid were added into astrocytes and cultured permanently for 30 days. P-glycoprotein, a product of MDR1, was detected with immunocyto chemistry. Then, 5μg/ml Sibelium was added to resistance cells and nonresistance cells, MTT assay was used to measure reverse multiple and relative reverse efficiency rate.

将苯巴比妥钠和丙戊酸钠分别加入培养的星形胶质细胞内，30天后用免疫细胞化学法检测MDR1的表达产物P-糖蛋白，继之将终浓度为5μg/ml的西比灵分别加入培养的正常细胞及MDR1表达增强的细胞内，用四甲基偶氮唑盐法计算逆转倍数和相对逆转效率，了解西比灵逆转MDR1表达的作用。

On basis of the color reactions of 4-(2-pyridine azo)-resorcin with copper, zinc and manganese, but the absorption spectrum of complex compounds which they created overlapped with each other seriously. Dealing with the spectrum data with the method of multivariate calibrations of chemometrics, we can simultaneously analyze the measured spectrum of mixture.

基于这三种金属离子均能和4-（2-吡啶偶氮）－间苯二酚发生显色反应，但所生成络合物的吸收光谱重叠比较严重，采用化学计量学的多元校正方法，解析了Cu(上标 2+)、Zn(上标 2+)、Mn(上标 2+)混合物的测量光谱。

Myocardialinfarct size and the area at risk for myocardial infarctionwere measured by Evans Blue and triphenyl tetrazolium chloridestaining, respectively.

心肌梗死面积和可能发生心肌梗死的危险区分别可以用偶氮蓝与氯化三苯四唑染色测量。

The adsorbent could efficiently adsorb a vatiety of organic dyes belonging to the triphenylmethane, heteropolyeyclic and azodye groups were used as model compounds.

研究了粉状磺化煤加到Fe3O4结构中制备磁性磺化煤，这种吸附剂能够有效地吸附许多有机化合物，用含三苯甲烷、杂多环和偶氮基等水溶性有机染料进行测定。

Fluorometric Determination of Trace Copper with A New Fluorescent Reagent 5-(4-Fluorophenylazo)-8-Salicylidene Aminoquinoline.

新型荧光试剂 5-(4-氯苯偶氮)-8-水杨醛缩氨基喹啉的合成及荧光性质。安徽师范大学学报， 2001，24(4)，353-355

Substituted-2-aminobenthiazoles were dissolved in a mixture of acetic acid,phosphoric acid and propionic acid, and diazotized by nitrosylsulphuric acid, then coupled with m-dimethylaminobenzoicacid to form 6-R-BTAMB in good yield.

我们在2-氨基苯并噻唑的6-位引入了不同的取代基R，合成了6种新试剂，2-I2'-(6'-R-苯并噻唑)偶氮-5-二甲氨基苯甲酸(6-R-BTAMB，R=〓，〓，Cl，Br，〓，〓，)，并研究了6-R-BTAMB与Fe、Co、Ni、Cu和Pd的络合显色反应的光度性能及不同R基团对试剂灵敏度及选择性的影响将6-〓-BTAMB应用于测定铝合金，电镀废液中的铜，人体毛发和矿泉水中铁的含量均取得了满意的结果。

Based on the laminar diffusion model, the micro-mixing in a rotating packed bed was discussed by taking the competitive and consecutive azobenzene reaction between 1-naphthol and diazotised sulphanilic acid as reaction system.

在层状扩散模型的基础上，以1萘酚与对氨基苯磺酸重氮盐在旋转填充床内发生的竞争串联偶氮化合反应为例，探讨了填充床内的微观混合情况。

A new mathematical model is built based on the laminar flow model and coalescence and redispersion model. Taking the competitive and consecutitive azobenzene reaction between 1-naphthol and diazotised sulphanilic acid as an example calculated segregation index.

在层状扩散模型和聚并分散模型的基础上，建立了一个新的数学模型，以1—萘酚与对氨基苯磺酸重氮盐这一竞争串联偶氮化合反应体系为例，计算了反映微观混合状态的离集指数。

In this dissertation, preparation of polysubstituted ethene and heterocyclic compounds based on 2-hydroxyalkyl phenyl selenides andα-phenylselenopropionic acid reagents were further investigated as follow: Firstly, O-ethyl-O-vinyl phosphonates were prepared in a one-pot, two-step transformation by Mitsunobu reaction of 2-hydroxyalkyl phenyl selenides with monoethyl esters of phosphonic acid in the presence of diethyl azodicarboxylate and triphenyl phosphine (PPh3) followed by oxidation-eliminatio...

中文摘要：本文主要进一步探索了2-羟基烷基苯基硒醚、α-苯硒基丙酸试剂在制备多取代乙烯和杂环化合物反应中的应用，具体研究内容和结果如下：一、在偶氮二羧酸乙酯和三苯膦(PPh3)存在下，苯基-2-羟基烷基硒醚和O-乙基膦酸单酯发生Mitsunobu反应，无需分离和纯化反应中间体，直接使用30 %的双氧水进行氧化-消除反应，提供了&两步、一锅&合成O-乙基-O-乙烯基膦酸酯的新方法，该方法反应条件温和，操作简便，产物收率良好(76-82 %)。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。