溴

It is 4 steps to synthesize benzal dehyde frOm CO2,and we can gain Quinocedox next step.

以CO_2 和溴苯为起始原料经历4步即可获得苯甲醛，再进一步就合成了目标化合物喹烯酮。

The results show that there is intensive synergistic effect among cetyltrimethylammonium bromide, benzalacetone and polyethylene glycol. A bright and compact nanocrystalline zinc was produced due to the coexistence of such three additives.

结果表明，十六烷基三甲基溴化铵、4-苯基-3-丁烯-2-酮和聚乙二醇三种添加剂之间具有较强的协同作用，采用三者组成的混合添加剂可制备出光亮致密的纳米晶锌镀层。

The pyrimidine lead compound is obtained via herbicidal activity screen. The optimization of lead compound leads to find the good pyrimidine benzylamine candidates with highly effective herbicidal activity. The novel herbicidal mechanism of pyrimidine benzylamine is put forward. N-(2-bromophenyl)-2-(4, 6-dimethoxypyrimidin-2-yloxy)benzylamine (103-1) has potential as a new selective post-emergent herbicide in oilseed rape.

通过系统的研究工作，发现了具有除草活性的嘧啶先导结构，经结构优化，筛选出具有高除草活性的嘧啶苄胺类优选结构，发现并提出了此类化合物的除草作用新机理，最终经田间试验证实了N-(2-溴苯基)-2-(4，6-二甲氧基-2-嘧啶氧基)苄胺(103-1)可作为超高效油菜田除草剂进行工业性的研究与开发。

Inaddition, an unexpected synthesis of an α,β,γ,δ-unsaturated ketone due to an abnormalopening of benzylidene acetal by bromide anion was achieved.

另外，在合成BC环的过程中，由于一步反常的溴负离子开苄叉反应，我们还意外地合成了一个α，β，γ，δ-不饱和酮化合物。

The preparation and operation of automatic sampling instrument, the selections of light reported andmeasurement way are described in betail in the paper.

文中详细叙述了自动进液装置的制作，使用方法，光源及测量方式的选择，试验确定了Au－溴－结晶紫离子缔合物萃取显色体系的最佳分析条件。

A Theoretical Study on the Reaction Mechanism of Epoxidation Reaction of the 4- Bicyclo

CEPS 思博网--文章书目；-1页数：7 需求点数：28 电子全文：请登入。篇名（4-溴甲基双环[4.4.1]-1，3，5，7，9-十一碳五烯基－3-）甲醇环氧化反应机理的理论研究

From the optically active 2, 2'-dihydroxy-1,1 '-binaphthyl, through esterification, Kumada coupling, bromization, hydrolization and Wittig elimination reaction, 2,2'-diethynyl-1,1'-binaphthyl was obtained.

从光学活性的2，2'-二羟基-1，1'-联萘出发，经过酯化，Kumada偶联，溴化，水解和Wittig消除反应五个步骤，成功地获得了具有单一手性的的2，2'-二乙炔基-1，1'-联萘。

All of these phenomena,especially the chemical reaction occurred in the bipyridyl system will result in unfavorable effects for the ATRP process.

所观察到的这些现象，特别是 1-溴乙基苯与联吡啶间的成盐反应，对ATRP过程会产生不良影响。

It was found that when the 2,2'-bipyridyl was used as a ligand for metal complex formation,an abnormal new peak was observed obviously whether in fluorescence or absorption spectrum.It indicated that a new species was formed owing to the reaction between them.

发现当以联吡啶为络合物配体时，无论荧光和吸收光谱中均出现反常的新峰，这和 1-溴乙基苯与吡啶间发生了成盐反应有关。

The invention discloses a dielectric hole-microhole composite material and synthesizing method in the inorganic porous material, adsorbing material and catalytic material technical domain, which comprises the following steps: adopting zeolite molecular sieve as raw material; reacting with sodium bisilicate solution under 30-60 deg.c for 10-300 min; disintegrating particle part of zeolite molecular sieve into piece with microhole structure; adding cetyl trimethyl ammonium bromide as molder; adjusting pH value of mother liquid to 10-12; aging 1-8h; adding in the high-pressure autoclave to do water heat synthesizing reaction at 80-130 deg.c for 24-72h; separating solid; washing; drying; sintering under 500-600 deg.c for 5-10h; obtaining the Si-Al porous material with dielectric hole and microhole composite structure.

本发明属于无机多孔材料、吸附材料和催化材料技术领域，涉及具有介孔-微孔复合材料及其合成方法。其特征是以沸石分子筛为原料，用偏硅酸钠的水溶液在30～60℃反应10～300分钟，使沸石分子筛的颗粒部分解离形成具有微孔结构的碎片，加入模板剂十六烷基三甲基溴化铵，然后调节母液pH值为10～12，老化1～8小时，然后加入高压釜于80～130℃进行水热合成反应。反应24～72小时后，分离出固体，水洗、干燥，然后于500～600℃焙烧5～10小时，得到具有介孔和微孔复合结构的硅铝多孔材料。本发明的效果和益处是所发明的合成方法可用于合成多种沸石结构和介孔结构的复合材料，所合成的材料经过质子交换可以具有较强的酸性，在吸附和催化领域具有广泛应用前景。

By using competitive adsorption of activated carbom to remove unfavorable influence of carbon in carbonaceous gold concentrate on leaching process, the leaching rate of gold concentrate can be improved to 88% as compared with 10%by direct cyanidation.

本文论述了利用活性炭竞争吸附作用，消除含炭金精矿中炭在浸出过程中的影响，使金精矿的浸出率可由直接氰化的10％提高到88％。

The only thing you're ever gonna be king of is King of the Stupids!

你只配做傻瓜的国王！