本文讨论了通过克莱森缩合反应合成5甲基异唑3甲酰胺工艺的改进。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation.
在氟化钾催化下，芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应，得到高产率的缩合产物。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.
图式1吡咯与苯甲醛的缩合反应。
发生了醌型体系的缩合反应。
利用乙酰丙酸和苯酚缩合反应制取双酚酸。
In this paper, the progress on diphenolic acid preparation by condensation reaction of levulinic acid and phenol is introduced.
缩合反应收率为20%。
目的改进盐酸环丙沙星制备中的哌嗪缩合反应。
Objective To improve Piperazine condensation reaction in the preparation of Ciprofloxacin hydrochloride.
醛、酮与醇的缩合反应是羰基保护的通用方法。
Condensation of aldehydes or ketones with alcohols is one of the most common methods for protecting carbonyls.
本文论述的第一个内容是二氧化硒催化的缩合反应。
The first part of this dissertation is devoted to the study of selenium dioxide catalyzed condensation reactions.
摘要呱嗪缩合反应是环丙沙星生产工艺中的关键步骤。
Condensation reaction of piperazine is a very important step in the process of synthesis of ciprofloxacin.
该合成反应符合质子化缩合反应机理和一级反应动力学特征。
This reaction accorded with the proton condensation reaction mechanism and the first order reaction.
综述了近些年来微波和离子液体在多组分缩合反应中的应用。
The current applications of microwave and ionic liquid in multicomponent reactions was illustrated.
研究以丙酮为原料液相法合成异佛尔酮的液相缩合反应动力学。
The liquid-phase condensation reaction kinetics of isophorone synthesis was investigated by using acetone as raw materials.
控制缩合反应的温度，还得到一种苯并环庚酮和一种苯并环戊烷。
One benzosuberone and one benzocyclopentane are synthesized when controlling the condensation reaction temperature.
该LCST聚合物可以经由该烷氧基硅烷基团的缩合反应交联。
The LCST polymers can be cross-linked by a condensation reaction of the alkoxysilane groups.
研究结果表明，无氧和酸催化的反应条件对缩合反应是至关重要的。
It was found that the reaction conditions, particularly the presence of acid and the absence of oxygen, were critical for the condensation reaction.
本文利用GC-MS对苯胺与丙酮缩合反应的产物进行了结构分析。
The present research analyzed the structure of the condensation products of aniline with acetone by GC-MS.
以硅胶为催化剂，丙酮和甲醛可经常压缩合反应合成甲基乙烯基酮。
Atmospheric vapor phase catalytic condensation of formaldehyde with acetone for manufacture of methyl vinyl ketone has been studied.
根据FTIR测定结果，推测在反应中可能发生酮与酸酐的缩合反应。
It was deduced from FTIR that the condensation reaction was caused by a reaction of ketone group with anhydride.
固相缩合反应有许多的优点，例如：减少了污染，消耗低且操作简单。
Solid phase reactions have many advantages such as less pollution, lower cost and simplicity in processing.
研制了一种应用于环己酮自缩合反应的新型固体催化剂CC - 1。
A novel solid catalyst (CC-1) for self-condensation reaction of cyclohexanone were developed.
结论：乙酸是催化剂，对缩合反应有利，希夫碱化合物具有一定抗菌活性。
Conclusion: Acetic acid is an important catalyst in the condensation reaction. Schiff bases had antibacterial activity.
缩聚物是由单体通过缩合反应形成，反应过程中有小分子生成，通常是水。
Condensation polymers are those prepared from monomers where reaction is accompanied by the loss of a small molecule, usually of water.
本文通过实验研究了超声波辐射下安息香的缩合反应及该反应的最优化条件。
This article analyzes the optimum condition of the reaction of benzoin condensation with the supersonic in the experiment.
认为凝胶失水收缩起源于交联聚合物网络中反应性、水化性基团的缩合反应。
The syneresis is considered to originate from some condensation reactions of hydratable reactive groups in the crosslinked polymer networks.
获得了酯化反应、酯化缩合反应、缩聚反应以及二甘醇生成反应的动力学参数。
The esterification, polyesterification, polycondensation and the formation of diethylene glycol (DEG) reaction kinetic parameters were obtained.
在碱性催化剂的存在下，甲醛和丁醛经羟醛缩合反应合成2,2—二羟甲基丁醛。
Respectively using barium hydroxide and a basic anion exchanger as a catalyst, 2, 2-bis (hydroxymethyl) butyraldehyde is prepared from the Aldol condensation of butyraldehyde with formaldehyde.
研究表明，H3BO3与杉木粉中的羟基发生了缩合反应，纤维素的结晶被破坏；
The results showed that hydroxyl groups of H3BO3 reacted with the hydroxyl groups of fir powder, and thus the crystalline phase of cellulose was destroyed.
烯丙基苯并恶嗪中间体是由烯丙基苯酚类化合物，与苯胺、甲醛脱水缩合反应而成。
Allyl-functional benzoxazine is synthesized by the reaction of allyl phenol, phenyl amines, and formaldehyde.
以茶碱为原料经取代、氧化和缩合反应制备多索茶碱；其结构为IR及MS所证实。
Doxofylline was synthesized from theophylline by substitution, oxidation and condensation. The structure has been proven by IR and MS.
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