Diastereoselective transfer of the diazene hydrogen to one face of the prochiral alkene was studied.

研究了重氮烯氢向前手性烯烃单侧的非对映选择性转移。

The third is unsaturated alkene.

第三为不饱和烯烃；

The hydrocarbon must be an alkene.

这个碳氢化合物必定是烯烃。

The Alkene Double Bond: a Focus of Reactivity.

烯烃的双键：重点是反应活性。

A hydrocarbon was known to be either an alkene or alkane.

某碳氢化合物已知可能是烯烃或是烷烃。

The Hofmann rule----yield mainly the least substituted alkene.

霍夫曼规则-----主要消除产物是取代基较少的烯烃。

An unsaturated hydrocarbon belonging to the alkene homologous series.

不饱和碳氢化合物，属于烯烃同系物。

The nucleophiles include alkene, alkyne, alcohol, acid, amine, water, etc.

亲核试剂包括烯烃、炔烃、醇、酸、胺、水等。

The organic peroxide is a sort of important initiator in alkene polymerization industry.

有机过氧化物是烯烃聚合工业中重要的引发剂。

Tungstogermanic acid as a catalyst for dehydration of alcohol to form ether or alkene is reported.

报道了钨锗酸对醇脱水成醚或成烯的催化反应。

The suggestion for developing the technics of alkene preparation from natural gas in China was proposed.

并对我国今后天然气制烯烃技术的开发提出了建议。

The comparison of heterogenized and homogenous catalyst on epoxidation of different alkene was also given.

同时与均相催化剂空气环氧化不同烯烃的性能进行了对比。

The preparation of sodium malonyloxyborohydride in situ and its selective hydroboration alkene are described.

叙述了丙二酰氧基硼氢化钠的制备及其原位与烯烃的选择性硼氢化反应。

Synthesis of soluble fluorinated alkene with hydroxyl and preparation of fluorinated polyurethane coatings were described.

本文介绍了可溶性的带羟基含氟烯烃的合成及含氟聚氨酯涂料的制备。

The material of the antiskid sheets is synthetic rubber, such as artificial rubber or butyl benzene alkene artificial rubber.

防滑片的材料为合成橡胶如丁基人造橡胶或丁基苯烯人造橡胶。

The computation indicated that the stable silicyl alkene is produced by the addition reaction of silicon alkyne and hydro-gen.

计算表明，硅炔与氢分子加成反应可生成稳定的甲硅烷基硅烯。

Since 70's years, the technology of manufacturing alkene from natural gas has been a focus of national and international study.

从70年代以来，天然气制烯烃技术一直是国内外研究的热点课题。

Objective To study and to determine the structure of alkene by the ozone oxidation of alkene and its hydrolysis reaction course.

目的通过烯烃的臭氧化及其水解的反应历程，研究和测定烯烃的结构。

The second-stage hydrogenation reaction is mainly hydrodesulfurization and alkene saturation hydrogenation of pyrolysis gasoline.

裂解汽油的二段加氢反应主要是脱硫、烯烃饱和等反应。

In recent years, special attention has also been devoted to hydroesterification of alkene using methyl formate instead of CO/CH3OH.

近年来，利用甲酸甲酯替代CO/CH3OH与烯烃的加氢酯化反应也逐渐成为研究热点。

The burst part in convection section of a tube of F108 cracking furnace in alkene factory, Liaoyang Petrochmical Company, was analyzed.

针对辽阳石化分公司烯烃厂f 108裂解炉对流段炉管爆裂破坏进行了分析。

The electrolytic titration method was compared with the inverse titration method in this paper for the accuracy of the measuring alkene.

比较了电位滴定法和反滴定法测定烯烃含量的准确性。

Conclusion the form of the alkene ozone oxide and its reaction course of ozone chain isomerization are likely to be the free radical ones.

结论烯烃臭氧化物的形成及其臭氧链异构的反应历程，属游离基型的可能性更大。

Method the glutinous ozone oxide was produced rapidly by inserting the ozone-bearing oxygen current in the nonaqueous solution of liquid alkene.

方法将含有臭氧的氧气流，通过液态烯烃的非水溶液中，迅速生成粘糊状的臭氧化物。

This paper mainly studies the effect of pressure, LHSV, temperature and mole ratio of alcohol and alkene on conversion ratio of tertiary amylene.

本文主要考察和研究了反应压力、空速、反应温度、醇烯摩尔比对叔戊烯转化率的影响。

Olefin (or alkene) Any unsaturated hydrocarbon containing one or more pairs of carbon atoms linked by a double Bond (see covalent Bond, saturation).

烯烃：含有一对或多对由双键连接的碳原子的一类不饱和烃。

This paper reviews the catalytic system of methyl formate reacting with alkene for synthesis of esters, in addition, the reaction mechanism is also discussed.

本文系统介绍了甲酸甲酯与烯烃反应合成酯的催化体系，并对反应机理进行了讨论。

Compared with crude petroleum, F-T synthetic crude oil mainly has paraffin and alkene, containing few cycloparaffin and arene, with extremely low sulfur and nitrogen.

同石油原油相比，F-T合成粗油品主要由链烷烃和链烯烃组成，环烷烃和芳烃含量很少，且具有硫、氮等含量少的优点。