• 二甲基吡乙酸,硝酸硫酸铵反应。

    Dimethylpyrazine reacted with phenylacetic acid, silver nitrate and ammonium persulfate.

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  • 方法乙酸原料经磺化拆分酰化酰胺取代反应合成头孢磺

    METHODS Cefsulodin was prepared, taking phenylacetic acid as the starting material, followed by sulfonation, resolution, acylation, amidation and substitution, in 5 steps totally.

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  • 通过2,4-二羟基乙酸合成考察反应时间物料配比水解过程反应的影响

    Through the experiment on synthesis of 2,4-dihydroxyphenyl acetic acid, the influences of reaction time, the molar rate of raw materials and hydrolysis on the yield of the product were studied.

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  • 催化剂的作用下,重氮乙酸甲酯吗啉衍生能够发生一种新型加成反应

    A novel addition reaction of methyl phenyldiazoacetate to enamine(which was prepared from acetophenone and secondary amine) was investigated using copper salt as a catalyst.

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  • 建议国内尽快上马羰基合成法生产装置;原生产厂家应改造工艺路线,采用羰基合成法生产苯乙酸

    It is suggested that the installations using carbonylation process will be built with highspeed and the old process of original plants were replaced by carbonylation method.

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  • 乙酸3种树脂吸附吸附自由变、吸附变也了计算对吸附行为作了合理解释

    The adsorption enthalpy change, free energy change, entropy change for the phenylacetic acid adsorbed by 3 resins were calculated, and the reasonable explanation was made to the adsorption behavior.

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  • 方法采用醋酸双氧铀电子染色,电子显微镜(电镜)观察培养C6细胞应用苯乙酸超微结构变化

    Methods After uranyl acetate staining, the change of ultrastructure of C6 cells before and after PA treatment was observed under transmission el etron microscopy.

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  • 满足对乙酰氨基苯乙酸乙酯后续结晶分离工艺需要,将分子蒸馏技术首次应用于同分异构体的预分离

    To meet the requirement of crystallization separation process for para-acetaminophenylacetate ethyl, molecular distillation was firstly used to separate the isomer.

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  • 乙腈原料 ,苄基三甲基氯化铵为转移催化剂碱性条件下进行水解反应制备对氯苯乙酸

    Preparation of trimethylsilyl quaternary ammonium salt phase transfer catalysts and their application in the synthesis of esterified carbon functional groups organic silicone monomers;

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  • 催化剂合成乙酸乙酯反应催化活性,联苯乙酸转化率达92%,而且回收容易重复使用性能

    The catalyst exhibited high activity for synthesis of ethyl 4-biphenylacetate, with felbinac conversion of over 92%. The catalyst can be easily recovered and has good performance for repeated use.

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  • 探索胆碱盐酸环喷托酯的合成工艺。该工艺乙酸钠为原料,两步化学反应得到目标产品,总产率50%。

    A process for the preparation of anticholinergic drug Cyclopentolate Hydrochloride by two-step sequence starting from sodium Phenylacetate in about 50% total - yield was reported.

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  • 以过硫酸铵硝酸自由基引发剂 ,以23二甲吡嗪苯乙酸为原料 ,首次采用自由基烃基化反应合成5苄基 2 ,3 二甲吡嗪。

    Dimethylpyrazine reacted with phenylacetic acid, silver nitrate and ammonium persulfate through a radical hydrocarbylation mechanism to yield 5 benzyl 2,3 dimethylpyrazine.

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  • 以过硫酸铵硝酸自由基引发剂 ,以23二甲吡嗪苯乙酸为原料 ,首次采用自由基烃基化反应合成5苄基 2 ,3 二甲吡嗪。

    Dimethylpyrazine reacted with phenylacetic acid, silver nitrate and ammonium persulfate through a radical hydrocarbylation mechanism to yield 5 benzyl 2,3 dimethylpyrazine.

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