• 报道了溴代甲基环丙烷合成

    The synthesis of (bromomethyl) cyclopropane was reported.

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  • 原料溴代物的合成收率达80%。

    Over all yield from starting to bromide is 80%.

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  • 讨论了利用直接合成阻燃剂六方法

    In this paper, the method of directly synthesizing hexabromobenzene with benzene and bromine was discussed.

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  • 一部分溴代山梨合成方法抗菌作用研究

    First, the synthesis method and anti-microbial activity of bromo-sorbic acid were studied.

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  • 用该氧化树脂氧化物可得到良好产率

    The oxidizing resin had the property of oxidizing primary alkyl iodides, alkyl bromides, allylc and benzylic halides to aldehydes and excellent yields were obtained.

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  • 本文研究菲醌合成9-羟基芴-9-甲酸溴代过程

    This paper studies the synthesis of the Philippines from 9-hydroxy fluorene -9 - formic acid to its bromide process.

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  • 本文介绍N-甲基-2-溴代吡啶卤化多肽合成应用研究结果。

    This paper describes the application of N-methyl-2-bromo-pyridium halide as a condensing reagent in peptide synthesis.

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  • 讨论了影响反应一些因素,比较不同试剂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.

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  • 研究溴代十六烷基三甲存在下8-羟基喹啉-5-磺酸络合反应

    The reaction of gallium with 8-hydroxyquinoline 5 sulfonic acid in presence of CTMAB has been studied.

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  • 方法1,3-丙烷乙酰乙酸乙酯原料环合、开环、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.

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  • 溴代环己烷苯甲酸乙酯原料经过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.

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  • 同时制备上,用二烷烃克服反应副产物反应时间等问题。

    And in the lappaconitine hydrobromide preparation, the outgrowth and long reaction time were overcome by dibromine alkyl instead of hydrobromic acid.

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  • 除了脂肪胺外多种异芳基甚至也能很好地与含N-H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.

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  • 硼酸三苯基膦催化下,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.

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  • 实验结果表明反应温度正丁烷用量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.

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  • 第二章中,通过理论计算对金催化溴代连二烯环异构化反应的机理进行了研究讨论

    In the second chapter, the mechanism of the gold-catalyzed cycloisomerization of bromoallenyl ketone was investigated and discussed.

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  • 筛选2-丁酸起始原料氨解,酯化拆分,环合五步反应得左乙拉西坦

    Screening for 2 - bromo- butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.

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  • 溶剂对1-溴代烷烃选择性产生显著的影响,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.

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  • 筛选2-丁酸起始原料氨解,酯化拆分,环合五步反应得左乙拉西坦

    Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.

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  • 于是,利用溴代吡啶基的反应证实甲醇进行的这个沉淀聚合产物表面覆盖的吡啶基。

    Then, it was verified with hydrocarbon bromide that pyridyl was grafted on the surface of microsphere prepared in methanol by precipitation polymerization.

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  • 采用溴代十六烷基吡啶滴定法时,只有阴离子大于30%时才可以准确测出样品阴离子度。

    The exact results are obtained when the anion degree of polyacrylamide is bigger than 30% by the titration of cetyl pyridine bromide.

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  • 以2 -丁烷尿素作为起始原料,经缩合、环化、三步反应得到除草定,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%.

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  • 考察了反应温度苯环产物收率色泽影响以及滴加速度对侧链光溴代产物收率影响。

    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.

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  • 溴代山梨山梨酸相比,被作用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.

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  • 因此工业环保角度来看,急需一种生产维生素D3的无溴代绿色工艺,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.

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  • 条路线关键一步反应化合物亲核反应,一般步反应,并且需要长的反应时间

    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.

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  • 光解N-甲氧基偕亚胺化合物高产率获得相应,并转变过程中小影响常见脱水剂卤化敏感官能团

    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.

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  • 本实验采用氢硫酸作催化剂,以正醇、工业酸(48%)及浓硫酸原料合成1 -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.

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  • 研究N 溴代丁二酰亚胺(NBS光化学反应及其溴代产物水解反应,提供了温和简便的制备方法

    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).

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  • 实验研究十二烷异相催化合成(反应是以十二醇和为原料,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 .

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