查询词典 diazotization

Then 2′bromo-2-dimethylamino-1,1′-binaphthyl was obtained via diazotization,bromination and methylation in 49.7% yield.

首先，它是在有机化学和无机化学的相互渗透中发展起来的，此外，它还和一些相关学科具有密切联系。

The diazotization and hydrolysis process was used to synthesize high-purity m-cresol using m-toluidine as the main material.

间甲酚是一种重要的精细化工中间体，以间甲苯胺为原料，采用重氮化-水解法制备高纯度间甲酚，通过正交实验和单因素实验对重氮化反应工艺条件进行了优化。

This method is based on the diazotization of sulfadiazine with sodium nitrite in acidic medium and the coupling reaction with α-naphthylamine.

在盐酸介质中，利用磺胺嘧啶－亚硝酸钠－α-萘胺的重氮化－偶合反应，建立了流动注射光度法测定磺胺嘧啶的新方法。

The influence of aniline concentration, feeding temperature and residence time on aniline diazotization in a spiral reactor was analyzed with orthogonal test and, in particular, the influence of feeding temperature was tested.

用正交试验方法分析了苯胺浓度、进料温度和停留时间等对螺旋管式苯胺重氮化反应工艺的影响，并着重试验了进料温度因素对反应的影响。

Diazido-1,2,4,5-tetrazine has been synthesized from 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine by hydrazinolysis and diazotization.

以3，6-双（3，5-二甲基吡唑基）－1，2，4，5-四嗪为原料，经过肼解反应和重氮化反应，制得了3，6-二迭氮基－1，2，4，5-四嗪。

3,6-Diazido-1,2,4,5-tetrazine has been synthesized from 3,6-bis(3,5-dimethylpyrazol-l- yl)-1,2,4,5-tetrazine by hydrazinolysis and diazotization.

以3，6-双(3，5-二甲基吡唑基)-1，2，4，5-四嗪为原料，经过肼解反应和重氮化反应，制得了3，6-二叠氮基-1，2，4，5-四嗪。

The diazotization condition of 4-methyl-1-ethyl-3-cyano-5amino-6-hydroxy-2-pyridone and coupling condition of its diazo salt were researched, and the structure of its diazo salt was confirmed.

研究了4-甲基-1-乙基-3-氰基-5-氨基-6-羟基-2-吡啶酮的重氮化反应及其重氮盐发生偶合反应的条件，确定了重氮盐的结构。

In this paper,the factors,which consisted of acidity,nitrite,the time of diazotization,concentration and time of decomposing excessive NaNO2,dosage of N-na reagent,time of coincidence and beam,were studied to character the effect of analysis for aniline compound in water.

研究了酸度、亚硝酸盐、重氮化时间、分解过量NaNO2所用试剂的浓度和时间、N-na试剂用量及偶合时间、光线等因素对水体中苯胺类化合物分析的影响。

Aminobenzoic acid was used to synthesize 4'-methyl-2-cyanobiphenyl, which was one of medicine intermediates, by diazotization, acylation, substitution, and dehydration.

以邻氨基苯甲酸为起始原料，经重氮化、芳基化、取代和脱水等步骤合成药物中间体4'-甲基－2-腈基联苯。

And get the target compounds by sealed tube reaction, diazotization, Sonogashira reaction.

并通过封管反应、重氮化、亲电取代、Sonogashira偶联反应以及保护基的脱去等反应合成了目标化合物。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷