氟化反应

In this research, we used a sol-gel process to prepare UV-curable antiglare coatings. First the inorganic monomer tetraethoxylsilane was formed into colloidal silica by hydrolysis and condensation reactions. Then, added the couple agent 3- propyl methacrylate and surfactant fluoroalkylsilane (13F) to modify the colloidal silica. Finally, organic monomer dipentaerythritol hexaacrylate were added to form hybrid material.

中文摘要本研究是经由溶胶凝胶制程，将无机单体四乙氧基矽烷先行水解、缩合反应成为二氧化矽，接著分别加入偶合剂三异丙基矽基丙烯酸酯、氟化矽氧烷(13F)、对二氧化矽微粒进行表面改质；之后再导入交联剂DPHA加以强化合成出奈米混成涂料。

The results indicated that the high level density functional theory calculations can be used to predict the 13C chemical shifts of the modified nanotubes. The calculated results also provided the characteristic chemical shifts values of nitrene (superscript -), carbene (superscript -) and 1,2- and 1, 4-fluorinated nanotubes, which would be helpful for experimental spectrogram assignments. Combined with NMR experiments, these predicted characteristic chemical shifts can be further used to monitor the addition mechanism and the extent of surface modifications on nanotubes.

研究表明高精度的密度泛函理论计算能够用来预测纳米管的13C化学位移，理论研究的结果揭示了氮烯、卡宾以及1，2和1，4氟化的单壁纳米管的若干13C信号特征化学位移值，为实验NMR谱图的归属提供了一定的依据，并且可通过与实验相结合来监测表面官能化碳纳米管加成反应是否发生以及确认其加成方式。

In this dissertation, traditional phase-transfer fluorination and solid-solid-liquid triphase-transfer esterification were studied, respectively.

本论文对传统相转移催化氟化和固一固一液三相相转移催化酯化反应进行了系统的研究。

The reaction mechanism and the latest research status of displacement fluorination of aromatics are summarized, and the development trends are forecasted also.

摘要综述了芳香族置换氟化的反应机理与最新研究状况，并展望了其未来发展前景。

The substituted half-sandwich titaconece with bulky alkoxyl group [CpTiC1〓 or CpTi 〓] or indene ring can not be fluorinated by BF〓·Et〓O under the selected condition, but still coordinates with the BF〓, this coordination then enhances the steric effect that stabilizes the precursor and hinders the reduction of the Ti to the Ti species, reflected in the decrease in polymerization activity.

但是这个转化受主催化剂分子的空间位阻和聚合反应温度的影响，当主催化剂为大位阻的烷氧基取代茂钛络合物或茚钛络合物时，在一般的聚合温度下BF〓不能对它们进行氟化，但可以和其中的OR配位，这种配位进一步加剧了空间位阻，从而阻碍了活性中心的形成，导致催化活性的下降。

Nitratomethyl-3-ethyloxetane was synthesized by the process of cyclization, nitation from trimethlolpropane and diethyl carbonate, and the homopolymer of 3-nitratomethyl-3-ethyloxetane was synthesized with 1,4-butanediol as initator and boron trifluoride etherate as an catalyst by cationic ring-opening polymerization.

以三羟-甲基丙烷和碳酸二乙酯为原料经环化、硝化两步反应合成了化合物3-硝酸酯甲基－3-乙基氧丁环；采用1，4-丁二醇为引发剂，三氟化硼乙醚(BF3Et2O)为催化剂，NIMEO发生阳离子开环聚合得到一种端羟硝酸酯均聚醚PNIMEO。

We synthesized a new monomer 1, 4-bis (4-fluorobenzoyl) naphthalene(1, 4-BFN) using the acyl chloride reaction and Friedel-Crafts acylation reaction of 1, 4-Naphthalenedicarboxylic acid with fluorobenzene.

第二部分，我们从1，4-萘二甲酸出发，经过酰氯化反应及付氏酰基化反应，合成了新型单体1，4-二（4-氟苯羰基）萘(1， 4-BFN)。

A series of novel polyethylene glycol derivates was synthesized by esterification of chloroacetic acid with polyethylene glycol. Because of the good reactive activity of α-chlorin in the esters it can react with 5-fluorouracil, thus the conjugate can be obtained .

采用氯乙酸与不同分子量的聚乙二醇进行酯化反应得到氯乙酸聚乙二醇酯，由于酯中的α-氯具有良好的反应活性，将它再与抗癌药物5-氟尿嘧啶结合制备了不同分子量的高分子前药。

An unusual substitution of 5-fluorouracils by the reaction of lithium salts of 1,3-dialkyl-5-fluorouracil with benzyl bromide is described.

1，3-二烷基-5-氟尿嘧啶的锂盐与苄基溴进行苄基化反应时产生了异常的反应结果。

We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS、NMR、FT-IR etc.

中文摘要我们已合成出一系列在联吡啶的4，4′位置有两个氟化烷基侧链的联吡啶配位基[4，4′-bis(RfCH2OCH2)-2，2′-bipyridine ， Rf=HC4F8(1a)， HC8F16(1b)， C3F7(1c)及C10F21(1d)]，经由亲核取代反应，由4，4′-bis-2，2′-bipyridine反应而得，并具有不错的产率，其纯化也简易可行，所合成之产物并可用GC-MASS、NMR、FT-IR鉴定其化学结构。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。