联基

Functionalized propargylic dithioacetals have been applied to one-pot furan annulation to afford the corresponding functionalized oligoaryls.

中文摘要应用官能基化的炔丙基硫缩酮进行一锅式呋喃稠合反应，可产生相对应之寡联芳香环化合物。

When the proportion of the aryl halides was changed,the aromatic products with different number substitutes could be obtained.

通过研究我们发现，活泼酰基与烯丙基在偶联反应中活性相当，可得到不同成环方式的产物，且当改变卤代物比例时，将得到不同数量取代芳烃的产物。

The property of bipyridyl ligands baring different substitute groups was studied, which indicated that carboxyl group is the best substitute group.

系统研究了联吡啶配体上取代基性质，确认羧基是最优异的吸附基团。

The Cardo structure could increase the solubility and thermal stability of the resultant polyimide.

通过在聚酰亚胺的主链中引入庞大侧基（9，9-二苯基芴）形成轴状聚酰亚胺，同时提高聚酰亚胺的溶解性和热稳定性；庞大的侧基又能阻止链的堆砌，避免生色团荧光链间淬灭；通过加入第二种二酐单体合成三元缩聚型聚酰亚胺，调控荧光性二酐在聚酰亚胺中的含量，降低生色团在聚酰亚胺中的浓度，来避免生色团荧光浓度淬灭，增加聚酰亚胺的固态荧光量子效率；通过使用热稳定性好的稠环生色团苝和吖啶来避免共轭类生色团（如含双键或三键的生色团）在高温下热交联及氧和水的破坏。

The crosslinked rubber with dicyclopentadienecrosslinkage was prepared by the reaction between the chlorohydrin rubberand the cyclopentadienyl sodium.

以环戊二烯基钠与氯醇橡胶反应，制得了含CPD侧基和双环戊二烯交联的聚合物。

In order to meet the demands of the development of Chinese mobile markets, we choose a thermosetting saturated polyester as the substrate and a trimeric cyanamide resin as the cross linker to develop a new generation of polyester-amino mobile baking varnish .

根据我国汽车市场发展的需要，以热固性饱和聚酯树脂为基质，采用三聚氰胺基树脂为交联剂，开发出了新一代的聚酯氨基汽车烘漆。

Aminobenzoic acid was used to synthesize 4'-methyl-2-cyanobiphenyl, which was one of medicine intermediates, by diazotization, acylation, substitution, and dehydration.

以邻氨基苯甲酸为起始原料，经重氮化、芳基化、取代和脱水等步骤合成药物中间体4'-甲基－2-腈基联苯。

Two kinds of di aniline derivative s connected with oxamethylene bridge or azamethylene bridge were synthesizied by condensation of o nitrophenol and ethylene dibromide (1,4 dibromobutane)or 4 chloro 3,5 dinitrobenzotyifluoride and ethylene diamine(1,6 hexandiamine)and consequent reduction.

由邻硝基苯酚和二溴乙烷以及由4－氯－3， 5－二硝基三氟甲苯和乙二胺为原料通过桥接、还原合成两类由氧亚甲基或氮亚甲基桥联的双苯胺衍生物。

It is found that the dihedral angle in the two kinds of molecules were affected by the formation of the nanotubes, as a result, the CD spectra are different.

制备了手性分子二—2—萘基吡咯醇及--2，2'-甲氧基-1，1'-联二萘的纳米管，发现纳米管结构的形成对手性分子的二面角产生一定影响，进而影响其圆二色谱。

In this report, the 59Tc labelling of Annexin V fragment modified with HYNIC (HYNIC-Anx13) using Tricine, EDDA or EDDA/Tricine as coligands was described. The effect of various factors on 99Tc labelling was investigated. Biodistribution studies in normal mice and gamma imaging of apoptosis in rats induced by cyclophosphamide were performed.

为探讨99Tc标记的HYNIC-Anx13用于细胞凋亡显像的可能性，分别以N-［三甲基］甘氨酸，乙二胺－N，N'-二乙酸和EDDA/Tricine为协同配体，对经6-肼基烟酰基修饰的膜联蛋白V片段(HYNIC-Anx13)的99Tc标记条件和主要影响因素进行了研究，并完成了HYNIC-Anx13的99Tc标记物在正常小鼠体内的生物分布和大鼠细胞凋亡模型的显像实验。

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