二甲基吡嗪与苯乙酸,硝酸银和过硫酸铵反应。
Dimethylpyrazine reacted with phenylacetic acid, silver nitrate and ammonium persulfate.
方法以苯乙酸为原料,经磺化、拆分、酰化、酰胺化和取代五步反应合成头孢磺啶。
METHODS Cefsulodin was prepared, taking phenylacetic acid as the starting material, followed by sulfonation, resolution, acylation, amidation and substitution, in 5 steps totally.
通过2,4-二羟基苯乙酸的合成考察了反应时间、物料配比和水解过程对反应的影响。
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.
在铜盐催化剂的作用下,重氮苯乙酸甲酯与吗啉衍生的烯胺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.
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.
对苯乙酸被3种树脂吸附的吸附焓变、自由能变、吸附熵变也作了计算,并对吸附行为作了合理的解释。
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.
方法采用醋酸双氧铀电子染色,电子显微镜(电镜)下观察培养C6细胞在应用苯乙酸后的超微结构变化。
Methods After uranyl acetate staining, the change of ultrastructure of C6 cells before and after PA treatment was observed under transmission el etron microscopy.
为满足对乙酰氨基苯乙酸乙酯后续结晶分离工艺的需要,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.
以对氯苯乙腈为原料 ,苄基三甲基氯化铵为相转移催化剂 ,在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;
该催化剂对合成联苯乙酸乙酯的反应催化活性高,联苯乙酸转化率可达92%,而且回收容易,重复使用性能好。
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.
探索抗胆碱药盐酸环喷托酯的合成工艺。该工艺以苯乙酸钠为原料,经两步化学反应得到目标产品,总产率约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.
以过硫酸铵和硝酸银为自由基引发剂 ,以2 ,3二甲吡嗪和苯乙酸为原料 ,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.
以过硫酸铵和硝酸银为自由基引发剂 ,以2 ,3二甲吡嗪和苯乙酸为原料 ,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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