联基

Three alicyclic dianhydrides, 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,4,5-cyclopentanetetracarboxylic dianhydride, and 1,2, 4, 5-cydohexane tetracarboxylic dianhydride were polymerized with two aromatic diamines, 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene (6FAPB, a) and 4, 4'-bis(4-amino-2-trifluoromethyl phenoxy) biphenyl (6FBAB, b) respectively, via a two-step polycondensation procedure to afford two series of fluorinated semi-alicyclic polyimides.

分别将脂环族二酐单体1，2，3，4-环丁烷四酸二酐、1，2，4，5-环戊烷四酸二酐和1，2，4，5-环己烷四酸二酐与芳香族含氟二胺1，4-双（4-胺基-2-三氟甲基苯氧基）苯(6FAPB， a)和4，4'-双（4-胺基-2-三氟甲基苯氧基）联苯(6FBAB， b)反应制备两个系列的含氟半脂环族聚酰亚胺，研究了PI薄膜的热性能和光学性能。

The effects of substituents on the nucleophilic reaction of benzyl halide and sodium azide were studied.

合成了叠氮苄、对氰基叠氮苄，对氟叠氮苄，对甲基叠氮苄和联苯二叠氮苄，研究了苯环上不同取代基对苄基卤代物与叠氮化钠经亲核取代反应生成苄基叠氮化物的反应的影响。

To improve the cyano reactivity, cyano-terminated PPENs were prepared by the end-capping reaction of PPEN-OL with CBN; benzonitrile terminated polys were also prepared by the polycondensation of excess 4,4'-oxydianiline with 1,2-dihydro-2-(4-carboxyphenyl)-4-[4-(4-carboxyphenoxyl)phenyl]-phthalazinone, followed by end-capping with CBA. The polymers synthesized exhibited good solubility in NMP, DMAc and DMF, and were crosslinked to afford phenyl-s-triazine-containing polymers under the similar conditions.

为提高氰基活性，以对氯苯腈为原料，对PPEN-OL进行封端，设计合成了含氰端基的聚芳醚腈；以含二氮杂萘酮联苯结构二酸单体与4，4'-二氨基二苯醚为原料，经Yamazaki膦酰化缩聚，并用对氰基苯甲酸进行封端，合成了含氰端基的聚芳醚酰胺。

The first ethynyl group is reacted with the first reactive group in a first carbon-carbon bond formation reaction and the second ethynyl group is reacted with the second reactive group in a second carbon-carbon bond formation reaction to crosslink the first backbone with the second backbone, thereby forming the packaging substrate.

在第一个碳－碳键生成反应中，使第一个乙炔基与第一个反应性基反应，在第二个碳－碳键生成反应中，使第二个乙炔基与第二个反应性基反应，将第一种主链与第二种主链交联，从而制成组装基片。

It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.

第三章，我们研究了在水相介质中金属铟促进的烯丙基溴对1，1-二氰基-2-芳基乙烯的Michael加成反应，生成一个含碳碳双键和二个碳氮叁键的三官能团化合物，另外，金属铟在水介质中还可以促进芳基磺酰氯与卤代烃发生碳硫键的偶联，生成砜。

METHODS: A series of N-octyl-N'-succinyl chitosan labeled with fluorescein, were incubated with HepG2 liver cancer cells, K562 leukemia cells, A549 human lung cancer cells, and BGC cancer cells respectively and followed by using flow cytometry and enzyme-linked immunosorbent assay to assess the affinity and inhibition of N-octyl-N'-succinyl chitosan for the four kinds of tumor cells already mentioned.

用异硫氰酸荧光素对N-正辛基－N'-琥珀酰基壳聚糖进行标记，再分别与人肝癌细胞(HepG2)、人白血病细胞(K562)、人非小细胞肺癌细胞(A549)及人胃癌细胞共培养，通过流式细胞仪及酶联免疫检测仪测定N-正辛基－N'-琥珀酰基壳聚糖对肿瘤细胞的亲和性及抑制力。

Using classical diazotisation of anilines, 5-(4-aminophenyl)-10,15,20-triphenyl-porphyrin was converted to a series of meso-tetraarylporphyrins with different substituents, including 5-(4-hydroxylphenyl)-10,15,20-triphenylporphyrin (80%), 5-(4-chlorophenyl)-10,15,20-triphenylporphyrin (74%), 5-(4-iodinphenyl)-10,15,20-triphenylporphyrin (76%), 5-(4-hydrazinephenyl)-10,15,20-triphenylporphyrin (67%) and 5-(4-bisphenyl)-10,15,20-triphenylporphyrin (32%). Therefore an efficient way of synthesizing unsymmetrically substituted TAPs was developed.

利用芳胺的重氮化及重氮盐反应，研究了5-(4-氨基苯基)-10，15，20-三苯基卟啉上氨基官能团的转化反应，以较高产率合成了5-(4-羟基苯基)-10，15，20-三苯基卟啉(80%)、5-(4-氯苯基)-10，15，20-三苯基卟啉(74%)、5-(4-碘基苯基)-10，15，20-三苯基卟啉(76%)、5-(4-肼基苯基)-10，15，20-三苯基卟啉(67%)和5-(4-联苯基)-10，15，20-三苯基卟啉(32%)等一系列含单个para-取代基的meso-四芳基卟啉，为合成不对称取代的芳基卟啉提供一条有效途径。

Treatment of polystyrene-supported selenium ,bromide with lithium acetylides afforded polystyrene-supported selenoacetylene, which reacted with dicyclohexylborane giving a way for stereoselective synthesis of polymer-supported- vinylic selenides .

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的-1，2-二取代乙烯的固相有机合成方法

It is shown that the optimal conditions for the reaction of CADB with SESA are pH 12.0 and m:m=6:1.The product p-aminobenzart sulfanily ethyl CADBwas diazotized and linked with lipase.The optimal pH for lipase linked to diao-compound is 7.5.The link time is at last 12h.

试验结果表明：CADB与SESA反应的最适条件是pH＝12.0，SESA与CADB质量比为6：1，反应生成的对氨基苯磺酰乙基交联烯丙基葡聚糖凝胶经重氮化后与脂肪酶偶联的最适条件是pH7.5，偶联时间≥12h。

The NaIO4 oxidation has been employed in the process of changing the adjacent hydroxyl to aldehyde group. It was showed that through repeat cross-link, the lipase density on the carrier surface was enhanced about 30%.

通过醛基被交联程度来评价交联过程的优劣：首先对纤维的氧化过程进行了简单优化，进而通过反复交联法与酶蛋白交联。

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