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The reaction of perfluoroalkyl bromide and a,w-perfluoralkylene dibromide in sulfinatodehalogenation system with olefins and the differences in behavior between perfluoroalkyl bromides and their corresponding iodides are reported.

本文报道代全氟烷和α,ω-二代全氟烷在亚磺化脱卤反应体系中与烯烃的反应及其与相应的碘代全氟烷的区别。

The dual-site phase-transfer catalyst, 1,4-bisbenzene dibromide, was synthesized in toluene solution at 70℃ from p-xylylene dibromide and tributylamine.

双活性基相间转移触媒是由二对二甲苯与三丁胺以甲苯为溶剂在70℃下反应生成化1,4-二苯。

A new type of difunctional initiator (benzyl dibromide, ethyl dibromoacetate) was proposed in this paper and used to synthesize poly based triblock copolymers such as PSt-PBA-PSt, PMMA-PBA-PMMA.

本论文提出一种新型ATRP双官能团引发剂(如α,α-二化苄、α,α-二乙酸乙酯),并用聚合反应速度法、GPC法、核磁分析法进行双官能度的验证,并通过两步聚合合成以聚丙烯酸酯为中间嵌段、苯乙烯或甲基丙烯酸甲酯为两端嵌段的ABA型三嵌段共聚物。

Two bispyrazolylimine nickel complexes [bis-N-(phenyl-1,3,5-dimethylpyrazolylmethylene) phenylimine nickel dibromide] (Cat.1) and [bis-4-methoxy-N-(phenyl-1,3,5-dimethylpyrazolylmethylene) phenylimine nickel dibromide] (Cat.2) were synthesized.

合成了两种双吡唑亚胺镍配合物:双-N-(苯基-1-3,5-二甲基吡唑基亚甲基)苯基亚胺二化镍Cat.1)和双-4-甲氧基-N-(苯基-1-3,5-二甲基吡唑基亚甲基)苯基亚胺二化镍

Objective: To study the effects of pentabrominated diphenyl ethers on the structure and function of reproductive system in rats and mechanism.

目的:研究五联苯醚对大鼠生殖系统结构和功能的影响及其机制方法:在五联苯醚对雄性大鼠生殖系统作用的时效关系研究中,选取健康23日龄雄性SD大鼠40只,体重40~60g,随机分为8组,每组5只,分别为染毒5、15、30、45d的实验组和溶剂对照组。

A compound of iodine with a more electropositive element or group.an iodide that is used in photography, in seeding clouds to make rain, and in medicine.

都含有化物,化物和碘化物含有极相似的分子结构,如果我们每天不停吃精。。。

This article provided a new route to produce 4-dimethoxy phenethylamine. In basic condition, the product could be obtained through etherization, bromation, Grignard reaction, hydroxyethylation, esterification and Gabriel reaction with phenol as raw material, the overall yield is 45.0%.

提出了合成4-甲氧基苯乙胺的新方法,即在碱性条件下,苯酚首先与硫酸二甲酯反应,再选用高选择性的化剂化后,经格氏反应、羟乙基化反应和酯化反应,最后经Gabriel反应可以制备目标产物,反应总收率为45.0%。

From 3-chloropropene bycondensation with sodium ethylate in ethanol to form 3-ethoxypropene followed by anti-Markovnikov addition with HBr inthe presence of benzoyl peroxide.

3-氯丙烯与乙醇钠在乙醇中回流制得3-乙氧基丙烯,继而在过氧苯甲酰存在下,与化氢经反马氏加成制得1--3-乙氧基丙烷,总收率89。

Research on methyl bromide alternatives is one of the hot issues in the area of current pest control. To study and develop new alternative fumigant, re-evaluate current fumigants are the focus of methyl bromide alternatives research.

甲烷替代研究是当前有害生物控制领域的热点问题之一,研究开发新的替代熏蒸剂,重新评估已有熏蒸剂,是甲烷替代研究工作的重点。

0 G of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

一百十九点零克的环戊基环戊烷和十九点四克的镁在乙醚或四氢呋喃中产生反应,形成一个环戊格氏试剂。

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老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。