溴

Or FR4 PCB, bromide exsited mainly in pyrolysis gas and gas products mainly consisted of CO, CO2, propylene, 2-methacrylate, bromomethane, and a small amount of acetone, C1-C3 halogenation alkyls. The pyrolysis gas could be reclaimed as fules after debromide treatment. Pyrolysis liquid products consisted of 8.333% water and 91.667% oil component.

R4板中溴元素主要存在于气体产物中，气体产物主要为CO、CO2、丙烯、2-甲基丙烯、溴甲烷以及其他小分子烯烷烃产物，气体产物可通过除溴无害化处理作可燃气回收；液体产物中含有8.333%的水和油质成分。

In this research FGA was synthesized through total ten steps such as epoxidation via H2O2, carbonyl protection, LiAlH2 reduction、carbonyl deprotection, epoxidation and ring opening with HF, oxidation, bromination and debromination et al.

设想通过对蕃麻二烯物进行H2O2环氧化、羰基保护、LiAlH4还原、羧基脱保护、溴羟环氧、HF开环、氧化、上溴脱溴等一系列反应得到FGA。

Taking 4-bromobenzaldehyde, acetic, benzaldehyde and ammonium acetate as major raw material, the 4, 5-bis(4-bromophenyl)-2-phenyl-1H-imidazole was synthesized by means of catalysis, oxidation and Debus cycloaddition reaction.

以对溴苯甲醛为原料通过催化，氧化生成1，2-二（4'-溴苯基）乙二酮，再以其与苯甲醛、醋酸胺和醋酸通过德布斯法合成2-苯基－4，5-二（4'-溴基苯基）咪唑。

The new synthetic technology of some important anthraquinone intermediates derived from 1-amino- anthraquinone, l-amino-4-hydroxy-anthraquinone, l-amino-4-bromo- anthraquinone-2-sulfonic acid, 1,5- and 1,8 dinitro- anthraquinone, have been studied.

本文研究了几种重要的由1-氨基蒽醌衍生的蒽醌型中间体：1-氨基-4-羟基蒽醌、1-氨基-4-溴蒽醌-2-磺酸和1，5-及1，8-二硝基蒽醌的合成化学，在此基础上开发了上述中间体的合成新技术。现行1-氨基-4-羟基蒽醌的生产技术是从1-氨基蒽醌出发，经二溴化再水解制得，溴的耗量在1.5mol以上。

In this work , 1,8-octodiol, the starting material, reacted with 40% hydrobromic acid to produce 8-bromooctan-1-ol, with the catalytic action of PPTs, its hydroxyl group was protected by 2,3-dihydropyran. Then it coupled with 1-heptaalkyne, by means of P-2 nickel as catalyst, stereoselectivity catalysis hydrogenated, with the catalytic action of acid to take off extremital 2, 3-dihydropyran which protected hydroxy group, then used PCC to oxidize alcohol into corresponding aldehyde.

以1，8-辛二醇为原料，与40%氢溴酸进行单溴代反应，得到8-溴-1-辛醇，在对甲苯磺酸吡啶盐的催化下与2，3-二氢吡喃反应，保护分子中的羟基，再与1-庚炔进行偶联，以P-2镍为催化剂立体选择性催化加氢，酸性条件下脱末端的2，3-二氢吡喃对羟基的保护，使用氯铬酸吡啶盐将醇氧化成醛。

The reaction of 4-bromaophenol and geranic acid in the presecnce of p-TsOH afforded 4-bromophenolα-cyclogeranoate in which cyclization of geranic acid toα-cyclogeranic acid was followed by esterification ofα-cyclogeranic acid with p-bromophenol.

对溴苯酚与香叶酸在p-TsOH催化作用下发生了香叶酸向α-环香叶酸环化、α-环香叶酸环与对溴苯酚的酯化，得到了唯一产物α-环香叶酸对溴苯酯，产率68%。

The latter is hydrolyzed in the acidic conditions, then the recovered copolymer of EO and glycidol with multi pending hydroxymethyls is esterified with 2-bromoisobutyrylbromide to produce the ATRP macroinitiator with multi pending bromoisobutyryl groups .

共聚物poly的羟基与2-溴异丁酰溴进行酯化反应，得到侧链挂有2-溴异丁酸酯基结构的可以用于原子转移自由基聚合体系的大分子引发剂Poly_

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中，通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇，如三羟甲基丙烷和季戊四醇)，合成了星形结构的共聚物，通过水解反应脱去保护基团后，再与2-溴异丁酰溴反应，得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂，通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链，PS为侧链的星形一接枝共聚物。

Bromododecane was synthesized from n-dodecyl alcohol using byproduct hydrobromic acid from 1-bromoadamantan process as raw material in the presence of the concentrated sulfuric acid.

以生产溴代金刚烷得到的副产品氢溴酸为原料，在浓硫酸存在的条件下与正十二醇进行反应合成1-溴代十二烷。

Initial experiment showed that the aromatic compounds were brominated to corresponding bromides with hydrobromic acid or bromine as brominating agent in the presence of sodium nitrite under the mild conditions.

研究发现在NaNO_2存在时，氧气能够以HBr(或Br_2)为溴化试剂，在温和条件下将芳香化合物氧化溴化生成相应的溴代芳香化合物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。