溴

Acenaphthene was dehydrogenated to afford acenaphthylene by photochemical reaction with N bromosuccinimide in benzene with the addition of quinoline at room temperature and atmospheric pressure was studied.

在常温常压下，以苯作为溶剂，加入喹啉，使苊与N－溴代丁二酰亚胺发生光化学脱氢反应生成苊烯。

3-Nitrodiphenylamine is generally synthesized by the Ullmann condensation of N-（3-nitrophenyl） acetamide with bromobenzene.

摘 要：间-乙酰氨基硝基苯与溴苯发生Ullmann缩合反应是制备3-硝基二苯胺最常用的方法。

The results of clinical assessment showed that levosimendan was safe and effective which could improve the prognosis of the patients and kept normal blood kinetics. By improving the reported synthetic route, levosimendan was synthesized from acetanilide via eight steps of reaction.

本论文探索了左西孟旦的合成路线，对文献报道的合成工艺进行了合理有效的改进，以乙酰苯胺为原料，最终经Friedel-Crafts反应，羰基α-位溴代，丙二酸二乙酯缩合，水解，脱羧，环合，拆分及重氮化加成等八步反应合成了左西孟旦。

The highest ee value of 71% was achieved by using chiral molybdenum 2'-pyridingyl alcoholate complex at 0 ℃. After addition of phase transfer catalyst Bu4NBr, the yield and ee value were remarkably increased.

其中手性吡啶醇二氧合钼在0℃下的对映选择性ee值达到71%；加入相转移催化剂四正丁基溴化铵，催化剂的活性和对映选择性有显著提高，其中手性吡啶醇二氧合钨在50℃下ee值由54％提高到78%。

The average relativeerror was 3.63%, less much than mostly used group-contribution methods for alkyne, chlorine derivative, iodine derivative, especially for alkane, bromine derivative, aromatic hydrocarbon, alicyclic hydrocarbon and sulfur-containing organic compounds.

对4068种有机物的正常沸点进行了估算，其平均相对误差为3.63%，总体估算精度明显优于相比较的基团贡献法，对炔烃、氯衍生物、碘衍生物，尤其是对烷烃类、溴衍生物、芳烃、脂环烃和含硫化合物的估算误差明显减小。

Alkene can turn bromine from brown to colorless.

烯烃可把溴由棕色变成无色。

The originalprocedure has subsequently been replaced by milder and more environmentallyfriendly conditions. We tried to alkylate 3,4,5-trimethoxytoluene by2-allylphenylbenzyl ether in the presence of N-bromosuccinimide.

本实验是在溴代琥珀酰亚胺的作用下使2-烯丙基苯基苄基醚产生苄正离子，苄正离子亲电进攻3，4，5-三甲氧基甲苯从而进行傅氏烷基化反应的。

Study on the Crystallization Process of Labeled GL-7-ACA Acylase CA130 Complex 7β-bromoacetyl amino cephalosporanic acid (BA-7-ACA), an analog of glutaryl-7-amino cephalosporanic acid (GL-7-ACA), can inhibit and specifically alkylate GL-7-ACA acylase (CA130) from Pseudomonas sp. 130, forming a carbon-carbon bond between BA-7-ACA and the C-2 on indole ring of Trp-β4 residue of CA130.Here we reported that BA-7-ACA labeled CA130 (BA-C130) could self-catalyze the hydrolysis of BA-7-ACA during crystallization process. The hydrolysis was confirmed to be a reaction analogous to the one of GL-7-ACA by comparative MALDI-TOF (matrix-assisted laser desorption/ionization-time of flight) spectrometry analysis.

二、GL-7-AcA酰化酶CA130标记复合物的结晶过程研究溴乙酰氨基头孢烷酸（7β-bromoacetyl amino cephalosporanic acid，BA-7-ACA）作为戊二酰-7-氨基头孢烷酸（GL-7-ACA）的类似物，不仅能够抑制GL-7-ACA酰化酶CA130的活力，而且能通过在BA-7-ACA和CA130的β亚基第四位色氨酸吲哚环二位碳原子之间形成碳-碳共价键而将CA130特异的烷基化。

It was found that the stereoselectivity of this reaction to produce S-CHBE could be remarkably improved by pretreatment with heating and allyl alcohol.

而烯丙基溴预处理可以使反应立体选择性从通常的生成S-型产物过量转变为R-型产物过量，优化处理条件后能使R-CHBE的e.e。

The carbonylation of allyl bromide and hydrogenation of 1-octene were carried out under atmospheric pressure and at 40℃.

研究了它们在烯丙基溴的常压羰基化反应和1-辛烯的常压加氢反应中的催化性能。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。