The Lewis acid character of organotin can contribute to form adductions.
有机锡的路易斯酸性质可以形成加合物。
IR pattern indicated that Lewis acid centers mainly exist on the catalyst surface.
红外光谱测试结果表明，催化剂表面主要存在L酸中心。
The effects of other Lewis acid catalysts on the reaction have also been investigated.
同时对其他路易斯酸催化剂对该反应的作用也做了一些考察。
The author used lewis acid as the catalyst and found the yield was raised as high as 67%.
本文研究常用路易斯酸作为催化剂，发现苯佐卡因的收率可提高到67%。
Hexahydrated ferric chloride is a lewis acid. It is a catalyst and oxidant in organic synthesis.
六水三氯化铁是一种路易斯酸，可以作为有机合成中的催化剂和氧化剂。
This paper gave an overall review of the application of lewis acid catalytic on various drug synthesis.
总结了路易斯酸在各种药物合成反应中的催化作用。
CONCLUSION: Basic catalysis is superior to Lewis acid catalysis. Using metal oxide is suitable for industrialization.
结论：碱性催化剂优于路易斯酸性催化剂，金属氧化物催化适合于工业化生产。
However, dendrimer catalysts are not easily synthesized and rare earth Lewis acid catalysts are easily deliquescence.
然而，树状大分子合成难度大，稀土催化剂也存在易潮解之不足。
CuPc was dissolved by the method of Lewis acid complexation-mediated solubilization (LAPS), whose mechanism was discussed.
用路易斯酸配位法溶解了铜酞菁，并对其溶解机理进行了简单探讨。
While higher fluorine content leads to the formation of stronger Brnsted acid site and Lewis acidity is also strengthened.
在氟含量较高时，生成了新的更强的B酸中心，且使得L酸酸性增强。
Researches in and application of Lewis acid, Bronsted acid, alkali, alkaline earth and molecular sieve catalysts were described in detail.
综述了L酸与质子酸、碱（土）金属和分子筛催化剂在合成反应中的研制与应用情况，指出了分子筛催化剂是一种极具开发潜力的催化剂。
These active centers play many important roles in biological system, such as oxidation-reduction, electron transfer, catalyse of lewis acid.
这些活性中心在生物体中扮演着许多重要角色，如氧化还原、电子传递、路易斯酸催化等。
Recent progress in the applications of non-enzymatic system about Lewis acid and base to (dynamic) kinetic resolution reactions of racemes is reviewed.
本文讨论了路易斯酸及路易斯碱催化体系在外消旋体(动态)动力学拆分反应中应用的最新进展。
The results on synthesis of tetracosene (C 24 olefins)by dimerization with a complex composed of Lewis acid (L) and complexing agent A as catalyst are reported.
研究以L酸和络合剂A配制的络合物为催化剂，用于四聚丙烯齐聚制备二十四碳烯。
IR results of pyridine adsorption reveal that supported samples have both Bronsted and Lewis acid centers, and 2-propanol dehydration is a Bronsted acid catalysed reaction.
吡啶吸附红外光谱结果显示负载样品同时具有B酸和L酸中心，异丙醇脱水催化反应发生在B酸位上。
But traditional Friedel-Crafts reaction has its own limitations, such as requirement of a stoichiometric amount of Lewis acid catalysts and large amounts of undesired products.
传统的傅克反应的局限性在于，需要等量的路易斯酸催化剂和产生大量的副产物。
Acetylation between alcohol and benzoyl oxide was carried out using ZnBr_2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR.
以溴化锌为催化剂，在无溶剂条件下实现了醇与苯甲酸酐的酰化反应，部分产物经NMR和IR表征。
The optimal parameters of synthesizing brominated polystyrene(BPS) was determined in the presence of antimony chloride as a Lewis acid, bromine chloride and polystyrene as raw materials.
以氯化溴和聚苯乙烯为原料，以三氯化锑为催化剂，对合成阻燃剂溴化聚苯乙烯的工艺条件进行了试验研究。
The formation mechanism of acid sites, mainly the formation mechanism of Bronsted acid sites in HY and REY zeolite as well as Lewis acid sites in matrices and zeolite of FCC catalysts are analyzed.
分析了催化裂化催化剂酸中心的形成机制，重点论述了HY沸石及REY沸石中B酸中心的形成机理，以及催化剂基质和沸石中L酸中心的产生途径。
The formation mechanism of acid sites, mainly the formation mechanism of Bronsted acid sites in HY and REY zeolite as well as Lewis acid sites in matrices and zeolite of FCC catalysts are analyzed.
分析了催化裂化催化剂酸中心的形成机制，重点论述了HY沸石及REY沸石中B酸中心的形成机理，以及催化剂基质和沸石中L酸中心的产生途径。
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