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.
用该氧化树脂氧化双溴代物可得到良好产率的单醛;
The oxidizing resin had the property of oxidizing primary alkyl iodides, alkyl bromides, allylc and benzylic halides to aldehydes and excellent yields were obtained.
本文研究了由菲醌合成9-羟基芴-9-甲酸到其溴代的过程。
This paper studies the synthesis of the Philippines from 9-hydroxy fluorene -9 - formic acid to its bromide process.
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.
讨论了影响反应的一些因素,比较了不同溴代试剂与锌酸盐发生反应的活泼性。
The factors of affecting on the reaction were discussed and the reaction activities of various bromo hydrocarbons reaction with zincate were given.
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.
方法以1,3-溴丙烷与乙酰乙酸乙酯为原料经环合、开环、溴代等反应合成。
METHODS The compound was synthesized through the reaction of cyclization, split, bromination et al and using 1,3-propyl bromide and ethyl acetoacetate as raw materials.
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.
筛选以2-溴代丁酸为起始原料,经氨解,酯化,酯胺解,拆分,环合五步反应制得左乙拉西坦。
Screening for 2 - bromo- butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
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.
筛选以2-溴代丁酸为起始原料,经氨解,酯化,酯胺解,拆分,环合五步反应制得左乙拉西坦。
Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
于是,利用溴代烃和吡啶基的反应证实在甲醇中进行的这个沉淀聚合产物的表面覆盖的是吡啶基。
Then, it was verified with hydrocarbon bromide that pyridyl was grafted on the surface of microsphere prepared in methanol by precipitation polymerization.
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.
溴代山梨酸与山梨酸相比,被作用的微生物生长适应期明显延长,生长量明显减小,霉菌菌落形成数减少。
Compared with sorbic acid, the microorganism growth lag phase was shortened, biomass and colony forming unit were decrease under the action of bromo-sorbic acid.
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.
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.
本实验采用氢溴酸法,用浓硫酸作催化剂,以正辛醇、工业废氢溴酸(48%)及浓硫酸为原料,合成1 -溴代正辛烷。
N-octyl bromide was synthesized by hydrobromic method in which took n-octanol and industrial waste hydrobromic acid (48%) as materials, concentrated sulfuric acid as a catalyst.
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.
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