氟化反应

Highly selective acylation at C-5 of indole was realized and a new method was established in the synthesis of TIMs.

采用三氟乙酰基作为吲哚C-3的保护基团，在路易酸催化下使吲哚的酰化反应高选择性地发生在5-位。

In order to investigate the tautomerism of 5-fluorouracil (5-FU) induced by proton transfer, we describe a study of structural tautomer interconversion using density functional theory calculations at B3LYP/6-311++G level of the theory.

采用密度泛函理论B3LYP方法，在6-311++G基组上研究了由质子转移引起的5-氟尿嘧啶(5-Fu)的异构化反应。

The steps were as follows: trimethyl borate-10 was synthesized from boron-10 trifluoride-ether complex and sodium methylate,which was hydrolyzed to synthetize boric-10 acid.

首先采用三氟化硼-10-乙醚络合物与甲醇钠反应生成硼-10酸三甲酯，之后水解合成硼-10酸。

Typical for a nonpolar gas, it is poorly soluble in water but soluble in nonpolar organic solvents.

六氟化硫是个极为惰性的气体，不与水、盐酸、氢氧化钠和熔融的钠作用，但会与金属锂反应并放热。

This thesis consists of four parts as follows: Part I: ReviewThe purpose of the present review is to summarize the organic chemistry of polyvalent iodine compounds regarded as Chlorides, Fluorides, Oxidize reagents in the field of organic synthesis, especially focus on their synthetic application and space structure, there are lots of reaction examples to illustrate the incomparable merits of organic polyvalent iodine compounds in the synthesis of some drugs and natural products.

本论文由以下四部分组成：第一部分：文献综述本部分比较全面地回顾了有机含碘化合物作为氯化、氟化、氧化试剂在精细有机合成中的应用，主要针对含碘试剂的合成及其结构做了比较详细的综述，并且列举了大量反应实例引证了这种类型试剂在药物及天然产物合成方面具备的优势。

Using the density functional theory, the reaction of chlorine trifluoride with propylene oxide was studied.

应用密度泛函理论对三氟化氯和环氧丙烷反应产生C3H5O和C1F2自由基的机理进行了研究。

It was shown from the results that emulsifier TP-Ⅴ which was prepared by PEG 4000 reacted with TME, in the molar ratio of TME to PEG 2:1, at about 110℃ for 1 h, catalyzed by boron trifluoride diethyl etherate, has a very good emulsifying impact for TME. Particle size distribution of the emulsion was homo-geneous and viscosity of the emulsion was small.

实验结果表明，以M相对适中的PEG4000与TME按物质的量比2： 1、在催化剂三氟化硼乙醚作用下、110℃左右反应1h合成的乳化剂TP-Ⅴ，对萜烯基环氧树脂具有很好的乳化效果，制备的乳液粒子粒径均一度较高，乳液表观黏度较小。

With 1-methylte-trazole-5-thiol and 7-ACA as the material and acetonitrile-boron trifluoride complex as Catalysts, 7-TMCAHCl was preparated and the yield could reach 91.80%.

以1-甲基－5-巯基四氮唑和7-ACA为原料，三氟化硼乙腈配合物为催化剂合成了7-TMCA盐酸盐，反应收率可达91.80%。

Compared to DNPH, reactivity was reduced for all carbonyl compounds investigated but could be enhanced significantly by using the strong Lewis acid boron trifluoride hydrate instead of sulfuric acid as catalyst in the same concentration.

比起化妆，羰基化合物被全部反应性降低，但可以提高调查显强刘易斯用硼酸氟化水合物代替硫酸作为催化剂，在同一浓度。

The results show that the originated materials for electrolyte aluminium is Al2O3 and AlF3 has good property to absorb vapour. After the water contained in the originated materials goes into electrolyte, AlF3 reacts with water hydrolyzed and the rest of water is electrolyzed into hydrogen and oxygen. Hydrogen enteres aluminum liquid by diffusing and autoecious in Al2O3, which is the main source of hydrogen in electrolyte aluminum liquid.

研究结果表明：电解铝所用的原材料(Al2O3和AlF3等)有良好的吸水性能，所携带的水分进入电解液后，或与氟化盐发生水解反应，或被电解成氢和氧，析出的氢通过扩散和Al2O3寄生机制进入铝液，这是电解铝液中氢的主要来源。

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。