氟化反应

So it has made the great progress. The method studied in this research from o-Dichlorobenzene is a ideal route to synthesize 2,4- dichlorofluorobenzene, which has temperate condition easy to control,safe process,low cost and good quality of products; The method of Phase transfer catalysis fluorination without solvent is better than present technology in presence of DMSO as solvent in many aspects; In a word,it is worth being promoted by the domestic correlative factories.

本课题所研究的以邻二氯苯为原料的2，4-二氯氟苯合成路线反应条件温和，工艺容易控制，生产安全，而且产品质量好，是比较理想的合成路线；以季胺盐为催化剂的无溶剂相转移催化氟化法与溶剂法相比具有明显的优势；通过实验确定的工艺条件对工业化生产有重要的指导意义，可提高以邻二氯苯为原料的工艺路线的市场竞争力。

And reacting the phosphorous pentafluoride with the lithium chloride in a hydrogen fluoride to prepare the lithium hexafluoro phosphate.

b使氟化磷与氯化锂在氟化氢中发生反应，制备六氟磷酸锂。

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

This thesis mainly studied on sulfamic acid catalyzed Cross-Aldol condensation, direct amidation of benzhydryl alcohol; solid base catalyzed synthesis of bisindoles was also discussed.

本论文主要讨论了磺氨酸催化下的Cross-Aldol反应；二苯甲醇的胺化反应；固体碱氟磷灰石催化的双吲哚甲烷衍生物的合成。

A new triphenylamine-containing aromatic diamine monomer, 4-[4-(1-adamantyl)phenoxy]-4',4-diaminotriphenylamine, was synthesized from cesium fluoride-mediated N-arylation of 4-(1-adamantyl)-4'-aminodiphenyl ether with 1-fluoro-4-nitrobenzene and subsequent reduction of the dinitro intermediate.

摘要 本研究首先使用 4-(1-adamantyl)-4'-aminodiphenol ether 与 1-fluoro-4-nitrobenzene，於DMSO中，以氟化铯为媒介，进行氮-芳香化反应（N-arylation），随后再进行中间产物的还原反应，制得一个种新型具有三苯胺结构的芳香族二胺单体 4-[4-(1-adamantyl)- phenoxy]-4'，4-diaminotriphenylamine。

The overall yield was 43.6%.The yield of reduce of ester was increased nearly one times than the past method because of KBH4-LiCl as the reducing agent instead of NaBH4. Changing the reaction conditions of bromization, the one-way yield enhanced 30%. The yield of reduce of the bromide was added by one times by improving the process. Tefluthrin was achieved by the catalytic esterification of DCC and DMAP.

优化后工艺对四氟对苯二甲酯的还原采用了廉价高效的还原试剂KBH4-LiCl，使收率比NaBH4法提高了近一倍；对溴化反应条件进行了优化，单程收率提高了30%；对溴化物还原条件的优化，使其收率提高了近一倍；采用了催化剂DCC和DMAP合成了最终产品七氟菊酯。

The cesium fluoride-mediated N,N-diarylation of 4-(biphenyl-4-oxy)aniline with 4-fluoronitrobenzene and subsequent reduction of the dinitro intermediate led to a new triphenylamine-based diamine monomer, 4,4'-diamino-4-(biphenylyl-4-oxy)triphenylamine.

以氟化铯为媒介将此苯胺与 4-fluoronitrobenzene 进行芳香族亲核取代反应，随后再进行dinitro中间体的还原反应，制得ㄧ种新型具有三苯胺结构的芳香族二胺单体4，4'-diamino-4-(biphenylyl-4-oxy)triphenylamine。

In this research, we used Trifluoroacetic anhydride as a derivatizing agent to esterify the trace glycerol in biodiesel, followed by the determination of trace glycerol using microwave assisted headspace SPME extraction technique combined with GC-ECD.

本研究利用三氟醋酸酐与生质柴油中的微量甘油进行酯化反应，反应后的衍生物以本实验室开发的微波辅助顶空固相微萃取装置采样，并以气相层析仪搭配电子捕捉侦测器作分析。

It divided into two steps to prepare cryolite from fluosilicic acid, in the second step, cryolite is manufactured through the reaction of the ammonium fluoride solution with the sodium sulfate and the aluminum sulfate.

氟硅酸制取冰晶石分两步进行，第二步用得到的氟化铵溶液与硫酸钠和硫酸铝反应制冰晶石。

This is transformed into anomeric acetates 16, which is used for the synthesis of a number of 2＇, 3＇-dideoxy-2＇-trifluoromethylnuclosides via Vorbruggen glycosylation reaction. At the same time, L-2-tifluoromethyl-4-thiofuranosides 39 were also prepared from the key intermediate lactone.

从这一砌块出发，经由关键中间体2-三氟甲基-γ-丁内酯转化得到的化合物16的Vorbruggen糖苷化反应，合成了2＇，3＇-双脱氧-2＇-三氟甲基嘧啶核苷。

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。