查询词典 alkenes

In the first part, Co-containing zeolites and MCM-41 have been studied for the epoxidation of alkenes.

第一部分研究了位于分子筛中的Co~(2+)或高分散的single-site Co在烯烃环氧化反应中的催化性能。

This thesis includes two parts. The first part is study on hydroformylation of alkenes in ionic liquid-H2O system.

本论文分两部分：咪唑离子液体—水体系中的烯烃氢甲酰化反应研究和新型咪唑类手性季铵盐的合成。

For alkenes, vehicle related emissions and fuel evaporation are the main sources, accounting for 49% and 40%, respectively.

烯烃主要来自于交通工具尾气排放和燃料挥发，其分担率为49%和40%。

In this paper, we design a multiple-level system according to the classification of 899 alkenes from OMNIC database.

设计了一个分等级系统对OMNIC数据库中899个烯烃化合物进行分类。

The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.

烯烃的自由基加成和亲电加成速率受不同的因素控制。

As an essential component of the Baylis-Hillman reaction, activated alkenes are a kind of very important building blocks in organic synthesis, and have been applied in various fields.

作为Baylis-Hillman反应的重要组成部分，烯烃特别是具有一定活性的烯烃，由于它们本身的结构特征，具有与一般烯烃不同的独特的性质，是一类非常重要的有机合成中间体。

It provides a useful vehicle for transforming unsaturated acids to their corresponding alkenes.

它为使不饱和酸变成相应的烯烃提供了一个有用的中间体。

A novel efficient procedure has been developed for the conjugate addition of amines to electron deficient alkenes.

提供了一种新型高效的催化缺电子烯与胺类的共扼加成的反应体系。

Alkenes have one or more double bonds between carbon atoms, where two pairs of electrons are shared.

链烯有一个或多个共价键，即碳原子分享两对电子。

The 1,3-dipolar cycloaddition of nitrones with alkenes is one of the most studied reactions, among all the cycloadditions.

硝酮与烯烃的反应是环加成反应中研究最多的一种反应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新