因此，从工业和环保的角度来看，急需一种生产维生素D3的无溴代绿色工艺，这也成为了最近几年的学术热点。
Therefore, the production of vitamin D3 by a halogen-free method is vital for the industry from an environmental point of view and has become a focus of scholastic interests.
报道了溴代甲基环丙烷的合成。
由原料到溴代物的合成总收率达80％。
讨论了利用苯直接溴代合成阻燃剂六溴苯的方法。
In this paper, the method of directly synthesizing hexabromobenzene with benzene and bromine was discussed.
第一部分为溴代山梨酸的合成方法和抗菌作用研究。
First, the synthesis method and anti-microbial activity of bromo-sorbic acid were studied.
本文介绍了N-甲基-2-溴代吡啶卤化盐在多肽合成中应用的研究结果。
This paper describes the application of N-methyl-2-bromo-pyridium halide as a condensing reagent in peptide synthesis.
研究了在溴代十六烷基三甲铵存在下，8-羟基喹啉-5-磺酸与镓的络合反应。
The reaction of gallium with 8-hydroxyquinoline 5 sulfonic acid in presence of CTMAB has been studied.
以溴代环己烷和苯甲酸乙酯为原料，经过两步反应合成了甲基丙烯酸二环己基苯甲酯。
With bromocyclohexane and ethyl benzoate as raw materials, dicyclohexylphenylmethyl methacrylate was synthesized by two steps.
同时在氢溴酸盐制备上，用二溴代烷烃代替氢溴酸克服了反应副产物和反应时间长等问题。
And in the lappaconitine hydrobromide preparation, the outgrowth and long reaction time were overcome by dibromine alkyl instead of hydrobromic acid.
除了脂肪胺外，多种异芳基溴代物甚至氯代物也能很好地与含N-H杂环化合物进行偶联。
Apart from alkyl amines, many aryl bromides, even heterochorides could be efficiently coupled by N-H heterocycles.
芳基硼酸在三苯基膦钯催化下，与溴代芳烃偶联反应，得到较高收率的不对称联苯衍生物。
Four unsymmetrical biphenyl derivatives were synthesized with good yields by the tetrakis(triphenylphosphine) palladium (0) catalysed cross-coupling reaction of arylboronic acid with bromobenzene.
实验结果表明，反应温度和溴代正丁烷的用量是相转移催化合成噻酮工艺的主要影响因素。
The experimental results indicated that the reaction temperature and the dosage of 1-butyl bromide were the main factors while the reaction time and the dosage of TBAB were the minor factors.
在第二章中，通过理论计算对金催化的溴代连二烯酮环异构化反应的机理进行了研究和讨论。
In the second chapter, the mechanism of the gold-catalyzed cycloisomerization of bromoallenyl ketone was investigated and discussed.
溶剂对1-溴代烷烃的选择性也产生显著的影响，非极性溶剂有利于1-溴代烷烃选择性的提高；
The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
当采用溴代十六烷基吡啶滴定法时，只有在阴离子度大于30%时才可以准确测出样品的阴离子度。
The exact results are obtained when the anion degree of polyacrylamide is bigger than 30% by the titration of cetyl pyridine bromide.
以2 -溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。
Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation, cyclization and bromination with total yield of 61%.
考察了反应温度对苯环上溴代产物收率和色泽的影响以及溴素滴加速度对侧链光溴代产物收率的影响。
The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.
两条路线中关键的一步反应是芳胺和溴代化合物的亲核取代反应，一般这步反应产率很低，并且需要较长的反应时间。
The key step of the two routes is the reaction of nucleophilic substitution of aromatic amines and -bromo compounds. Generally the produce rate of this reaction is low and the reaction time is long.
光解N-甲氧基偕溴代亚胺化合物以高产率获得相应的腈，并在转变过程中小影响对常见脱水剂和卤化剂敏感的官能团。
Photolysis of N-methoxyimidoyl bromides leads to formation of the corresponding nitriles without affecting functional groups sensitive to ordinary dehydrating and halogenating reagents, in high yield.
研究了芴与N 溴代丁二酰亚胺（NBS）的光化学反应及其溴代产物的水解反应，提供了一种温和、简便的制备芴醇的方法。
A simple and mild method for the synthesis of fluorenol was studied. 9 bromofluorene (9 BF) can be selectively obtained by the photochemical reaction of fluorene with N bromosuccinimide (NBS).
实验研究了溴代十二烷的异相催化合成（反应是以十二醇和氢溴酸为原料，在预处理后的717阴离子交换树脂催化剂作用下进行的）。
The heterogeneous catalytic synthesis of 1 bromododecane from ROH and HBr is studied . The experiment is carried out with 717 anion exchange resin as catalyst .
本文用苦味酸溴代十六烷基吡啶离子对作为电活性物质，以邻苯二甲酸二辛酯为增塑剂，研制成以PVC为基质膜的苦味酸离子选择电极。
In the paper, a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.
研究了在非离子表面活性剂OP存在下，钛与二溴苯基萤光酮（DBPF）和溴代十六烷基吡啶（CPB）形成三元络合物的析相显色反应。
The optimum conditions of the phase separation coloring reaction of titanium with DBPF and CPB in the presence of nonionic surface_active agentOPwas studied.
研究表明，当原水中含有溴离子时，经氯化消毒、氯胺消毒或臭氧消毒后会增加溴代消毒副产物的形成，并且溴代副产物具有更高的遗传毒性。
Bromide by-products would increase after disinfection by chlorination, chloramination and ozone if containing bromine ions in raw water, and they have a higher genetic toxicity.
溴苯那敏是第一代抗组胺药。
它是溴已新的活性代谢物，与第一代和第二代祛痰药相比，它毒性低，祛痰作用强，是最常用的祛痰药之一。
Compared with the first and second generation expectorant drugs, it has much more powerful expectorant function and lower toxicity, and is one of most clinically-used expectorant drugs.
本发明提供六溴环十二烷生产新工艺，属于卤代烷烃合成生产技术领域。
The present invention provides a new method to produce hexabromocyclododecane, which belongs to the synthesizing and manufacturing technology field for halogenating alkyl and hydrocarbon.
第一种方法：用液溴作芳化试剂，将4-氯代四氢苯酐芳化为4-氯代苯酐，收率达到89%，纯度大于99%；
The first route was using the liquid bromine to aromatize the 4-chlorotetrahydrophthalic anhydride to 4-chlorophthalic anhydride, The yield was 89%, and the purity was more than 99%.
从氟代甲苯出发，以醋酸为溶剂，采用液相空气氧化法，在钴锰盐和1，1，2，2-四溴乙烷催化体系存在下，合成了氟代苯甲酸，采用升华方法进行精制。
Fluorobenzoic acids were prepared from fluorotoluenes through liquid phase air oxidation with acetic acid as solvent and Co~(2+)-Mn~(2+)-1, 1,2,2-tetrabromoethane as catalyst.
从氟代甲苯出发，以醋酸为溶剂，采用液相空气氧化法，在钴锰盐和1，1，2，2-四溴乙烷催化体系存在下，合成了氟代苯甲酸，采用升华方法进行精制。
Fluorobenzoic acids were prepared from fluorotoluenes through liquid phase air oxidation with acetic acid as solvent and Co~(2+)-Mn~(2+)-1, 1,2,2-tetrabromoethane as catalyst.
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