苯基的

The chiral polymer P-1 shows strong blue fluorescence due to the extended π-electronic structure between the chiral repeating unit-6,6'-di(4-trifluoromethyl-phenyl)-2,2'-bisoctoxy-1,1'-binaphthyl and the conjugated linker 2,2'-bipyridyl group via vinylene bridge.

手性高分子P-1能发射强的蓝色荧光，这是由于手性重复单元-6，6′-二(4-三氟甲基苯基)-2，2′-二正辛氧基-1，1′-联萘和单元2，2′-联吡啶通过亚乙烯基桥连形成共轭高分子结构造成的。

A series of sulfonated poly(arylene thioether/ether phosphine oxide)s was prepared by direct polycondensation of sBFPPO and BFPPO with the diphenol-type or dimercapto-type monomers such as hydroquinone, bisphenol-A, 4,4'-biphenol, 4,4'-diphenol (6F), 1,5-dihydroxynaphthalene, 4,4'-dihydroxybiphenyl, and 4,4'-thiobisbenzenethiol, respectively.

将BFPPO与sBFPPO分别与多种二羟基或二巯基单体，如对苯二酚、双酚A、4，4'-二苯酚、双酚F、1，5'-二羟基萘、4， 4'-二羟基二苯硫醚和4，4'-二巯基二苯硫醚，直接共聚制备了一系列磺化聚芳醚三苯基氧膦，侧重考察了二羟基和二巯基单体结构单元对产物的耐氧化性能的影响。

Poly{[2-(4-biphenylamino)phenyl]phenylenevinylene} was prep-ared with 4-nitroanline which was coupled with p-xylene,throughreduction、idionization、Ullmann reaction、bromization、condensepolymerizationto get the final product.

本文提出了两条合成聚(2-芳基苯撑乙烯)的新路线，即聚{ 2-[4-苯基]苯撑乙烯}是以对硝基苯胺为原料，其与对二甲苯经改良的Gomberg-Bachmann反应偶联、再通过还原、碘化、Ullmann反应、溴化、缩聚反应得到。

Bis-(2,3-dibromo-4,5-dihydroxy-phenyl)-methane is a natural bromophenol with significant inhibition against PTP1B IC_(50=2.4μmol/L, which was isolated from the ethanol extract of red algae Rhodomela confervoides.

双-(2，3-二溴-4，5-二羟基苯基)-甲烷是从松节藻醇提物中分离鉴定出的溴酚类化合物，体外活性筛选发现，它具有极强的蛋白酪氨酸磷酸酶1B(PTP1B)抑制活性IC_(50=2.4μmol/L。

In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物，通过2-氨基-5-(3-吡啶基)-1，3，4-噻二唑与酰基叠氮化物反应，设计合成了7个新的N-[5-(3-吡啶基)-1，3，4-噻二唑-2-基]-N'-取代苯基脲，其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

When vulcanizates are cured by hydrosilylation, which is catalysed by chloroplatinic acid catalyst, vulcanizates can be cured adequately when C_1 gum, C_2 gum and C_3 gum are used. And their suitable amount used is 10-14 phr.

当C_1胶、C_2胶和C_3胶应用于二甲基二苯基硅橡胶时，由于硅橡胶体系中同时存在大量的苯基和稠环基团，二者会产生协同效应，所得样品具有较好的耐辐照性能。

N-p-tolylmaleimide is a kind of monomer to copolymerize with MMA to enhance the thermal stabilities of PMMA.In this article, NPTMI was prepared from the reaction of maleic anhydride and p-toluidine in one stage, which was testified by FTIR. The mp. of NPTMI was 154 and consistent with the literature.

目前国外对这方面的研究比较成熟，国内研究的较少，且还没有对N-对甲基苯基马来酰亚胺、MMA和第三单体丙烯腈或苯乙烯共聚以制备耐热PMMA树脂及其性能的研究。

As to the catalytic coupling of aryl bromides, when triphenylphosphine as ligand and malononitrile as subtracts, their isolated yields were generally in 72-88%; While using cyanoacetate instead of malononitrile, the yields were in 67-84%.

当采用常见的三苯基膦为配体、对取代溴苯而言，以丙二腈为底物时，偶联产物的分离产率一般都在72-88％之间；以腈基乙酸乙酯为底物时，分离产率在67-84％之间。

The two rate equations fitted the experimental data well,as was confirmed by the reaction of bis(4-carboxyphenyl)phenyl phosphine oxide with ethylene glycol under constant reaction temperatures of 180197℃ and at different ratios of diol to diacid,whose rate constant and activation energy were calculated.

将这两个速率方程应用于双苯基氧化膦与乙二醇的恒温自催化聚酯化反应，计算值与实验数据相一致，并计算得到了该反应的速率常数和活化能。

The immediate products of this reaction are alkali-metal derivatives of the dialkyl phenylmalonates.

此反应得到的产物为二烷基苯基丙二酸酯的碱金属盐衍生物。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。