查询词典 method of synthesis

A novel method for the synthesis of α-bromo acetophenone s by the reaction of 1,3-dibromo- 5,5-dimethylhydantoin with p-toluenesulfonic acid in methanol at 20～60 ℃ was described.

报道了使用1，3-二溴-5，5-二甲基海因和对甲苯磺酸在甲醇中和20～60℃的温和条件下合成α-溴代苯乙酮的新方法。

A new method for the direct synthesis of α-acyl methylenetriphenyl-arsoranes from readily available arsonium salts was afforded.

提供了一个由α-位具有强吸电子取代基的鉮盐一步合成α-酰基胂叶立德的新方法。

The synthetic method for nickel borate acylate, a kind of rubber-steel c ord adhesion promoter, through nickelous carbonate borate and mixed carboxylic a cids was studied, and many factors influencing the synthesis of NBA were investi gate d systematically.

研究了以碳酸镍、硼酸酯和混合羧酸合成新的金属橡胶粘合促进剂硼酰化镍的新方法。系统地考察了各种因素对合成硼酰化镍的影响。

In this paper,the recent developments,synthetic situation and bioactivity of alicyclic polysulfide s are reviewed comprehensively in order to find a simpler and more effective synthesis method.

脂环多硫化物是一种新型香料，具有浓郁的特征香味和良好的生物活性。为了寻找更简单高效的合成方法，推动此类香料的研究，详尽探讨了其研究现状、合成进展及生物活性

In part three we developed another highly efficient method for the synthesis of allylic iodide.

第三章对Baylis-Hillman加成物在有机合成中的应用做了一些新的探索。

Part two, Three analogue compounds of actamiprid were synthesized by analogue synthesis method through the intermediates which have insecticide activity.

第二部分中，选取本身具有杀虫活性的基团取代吡虫清中的2-氯-5-氯甲基吡啶，采用"类同合成法"合成了3个烟碱类杀虫剂吡虫清的类似物。

Organization: Institute of Chemical Engineering and Environment, Qingdao UniversityAbstract: A new Schiff base and its cupric complex of L-lysine and anisaldehyde were synthesized by stepwise synthesis method in anhydrous system, with basic essential amino acid L-lysine and natural product anisaldehyde as precursor.

摘 要：以碱性必需氨基酸L-赖氨酸和天然产物茴香醛为前体物，采用分步合成法在无水体系中制备了L-赖氨酸缩茴香醛单席夫碱及其铜配合物。

It is worked through the synthesis studying and analyses of the chinese and the overseas theory of industrial layout, using anthropogeography and city planning theory and method, combining the status quo in Liaoyuan city.

本文通过对国内外有关工业布局理论和实践进行综合性研究和分析，运用人文地理学、城市规划学等多种理论与方法，结合辽源市实际现状，理论联系实际，对辽源市工业布局进行探索研究。

In this paper,the technological calculation of a packed bed reactor of the gasphase synthesis of vinyl acetate via the acetylene method is presented,and some factors af-fecting the operations of a reactor are discussed.

介绍了乙炔法气相合成醋酸乙烯固定床反应器的工艺计算，并对影响反应器正常运行的各种因素进行了讨论。

In this paper,Litvin's Local Synthesis Method was used to determine all machine-tool settings for HGM and HGT cutting,with which the location of oontad area,the dimension of contact ellipse,the direction of contact path,the shape and magnitude of transmission error of machined hypoid gear drive can satisfy prescribed requirement aoeurately.

本文应用Litvin的局部综合方法进行了准双曲面齿轮切齿设计的推导。通过一次计算便能获得HGM和HGT加工的准双曲面齿轮的全部切齿参数。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！