卤烃

A series of calix[6]arene derivatives have been synthesized and their performance as PTC in the fluorination of halogenated aromatic compounds has been studied.

本论文合成了一系列的杯[6]芳烃衍生物，并研究了其作为相转移催化剂用于卤代芳烃氟化反应的性能。

In order to determine the content of hydrocarbons and halohydrocarbons in uranium hexafluoride,the first step is to passivate the inlet system and ion source of mass-spectrometer.

了测定六氟化铀中烃和卤代烃的含量，首先要对进样系统和质谱计的离子源进行充分的钝化。样品必须全部汽化后方可通入质谱计，否则分馏效应将严重歪曲测量结果。

Under normal temp., PVF2 has a fine corrosion resistance to many organic solvents like halogen, halogenated hydrocarbon, strong oxidant, boiling acidalkali; UHMWPE has a fine corrosion resistance to inoxidable acid (dilute sulfuric acid, nitric acidlarge concen-tration hydrochloric acid, phosphorus acid, hydrofluoric acid, formic acidacetic acid), ammonia, aminevarious alkalisalty solutions. Both materials can't resist the corrosion of strong oxidable acid.

在常温下，PVF2对卤素、卤代烃、强氧化剂、沸酸、碱等多种有机溶剂都有良好耐蚀性；UHMWPE对非氧化性酸(稀硫酸、硝酸及浓度较大的盐酸、磷酸、氢氟酸、甲酸、乙酸)、氨和胺及各种碱、盐溶液都有良好的耐蚀性，两种材料都不耐强氧化性酸的腐蚀。

The way to prepare iodomethane using methanol, potassium iodine and acid as regents has the disadvantages such as many side reactions and low yield, while the synthesize route from dimethyl sulfate and potassium iodine has the advantages of high yield and simple separation.

醇与氢卤酸作用是制备卤代烃的常用方法，以甲醇为试剂，以碘化钾与酸作用生成氢碘酸制备碘甲烷的方法存在副反应多、收率不高的特点；而以硫酸二甲酯及碘化钾为试剂的合成路线具有操作容易、收率高、纯化简单的优点。

Synthesis of organic sulfuric compounds in aqueous media is carried out by: using thio-olefin compounds with carbonyl compounds, acetal/keltone, hydrazone, oxime, osazone and enamine to synthesize mercaptal/keltone compounds in aqueous media; using thio-olefin compounds with alpha-hydroxyaldehyde/keltone or alpha-halogenated aldehyde/keltone to synthesize thia-olefin derivatives in a queous media; using thio-olefin compounds with alpha, beta-unsaturated hydroxy compounds, C-C treble bond, C-N treble bond, C-C double bond, N-N double bond, C-N double bond, C-S double bond, epoxy and its derivatives, aziridine and its derivatives, cyclopropane and its derivatives and halogenated carboxy to synthesize sulfoether compounds in a queous media.

含水介质中有机硫化合物的合成方法，本发明属于有机合成方法，用硫缩烯酮类化合物与羰基化合物、缩醛/酮、腙、肟、脎、烯胺在含水介质中合成缩硫醛/酮化合物，与α-羟基醛/酮或α-卤代醛/酮在含水介质中合成噻烯类衍生物，与α，β-不饱和羰基化合物、碳碳叁键、碳氮叁键、碳碳双键、氮氮双键、碳氮双键、碳硫双键、环氧乙烷及其衍生物、氮杂环丙烷及其衍生物、环丙烷及其衍生物、卤代烃等在含水介质，中合成硫醚化合物。

The conversion of alcohols to alkyl halides was investigated using acidic ionic liquid X as halogenating agent, acidic catalyst as well as medium.

2以酸性离子液体X兼作卤代试剂、反应介质和酸性催化剂，研究了醇转化为卤代烃的反应。

The main reasons were that the algae and organism in the water decreased the ability of removing pollutants by coagulations, the algae which grown again in the open sedimentation tank weakened the removal effect of algae by coagulation; because of the accumulation of algae and algae toxin in the filtration tank, the concentration of algae toxin in the effluent increased; by the function of fluid chlorine, the algae and organisms after the filtration will release microalgae toxin and produce a lot of byproduct such as microalgae toxin, sobomyl and so on, meanwhile, the chlorination produce considerable halide and halo-acetic acid and other disinfection byproduct.

主要表现在藻类和溶解性有机物的存在降低了混凝去除污染物的能力；藻类在露天平流沉淀池中再生长，抵消了混凝除藻效果；藻类和藻毒素在滤池中积累，导致滤后藻毒素升高；穿透滤池的藻类和有机物在液氯作用下，释放微囊藻毒素、土臭素和二甲基异冰片等胞内物质，同时生成数量可观的卤代烃和卤乙酸等消毒副产物。

The effects of the variety of catalyst, organic solvent used and the halogen ion released from the alkyl halide added, the amoun

详细研究了催化剂、溶剂、卤代烃的卤素原子、碱的种类和用量、反应温度和搅拌速度对反应的影响。

This novel reagent was treated with LDA to produce polystyrene-supported a-seleno carbanions, which reacted with alkyl halides and epoxides, followed by stereospecific selenoxide syn-elimination to give olefins and allylic alcohols respectively.

它与LDA反应形成α—硒基稳定的碳负离子，再与卤代烃或环氧化合物发生α—烷基化反应，烷基化后的树脂可以在30%的双氧水中进行氧化-消除，以良好产率和较高纯度合成了取代烯烃或烯丙基醇。

Halogen, proton acids, sub-halogen acid are electrophilic reagents, olefin addition reaction is the electrophilic addition reaction .

卤素、质子酸，次卤酸等都是亲电试剂，烯烃的加成反应是亲电加成反应。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。