提出了可能的环化反应机理。
A possible mechanism for the cyclization reaction was suggested.
从聚酰胺酸化学环化反应机理出发对这一结果给予了解释。
The phenomonon was explained in view of the mechanism of chemical cyclization of poly(amic acid).
本文用概率方法推导出包括溶胶中分子内环化反应的溶胶凝胶分配方程。
By the use of probability method, the sol-gel distribution equations including intramolecular reaction of sol are deduced.
衣康酸和酰胺基的存在促进环化反应的发生，由红外数据得到进一步证实。
This reaction is facilitated by the presence of acid and amide groups, and is further verified by infrared data.
应用一氯二乙基铝和苄基氯催化剂体系进行了丁苯橡胶的阳离子环化反应。
Styrene butadiene rubber (SBR) was cyclized with the aid of cationic catalyst system based on diethylaluminum chloride(Al) and benzyl chloride(RCl).
叙述在环化反应温度下，用反应精馏法合成均三唑的方法。收率可达96％。
Sym-triazole is synthesized by reaction rectification under the temperature of cyclical reaction. The yield is 96%.
通过对红外光谱、1H - nmr谱的初步解析，证实了环化反应的发生。
The occurrence of SBR cyclization was confirmed by the primary analysis of ir and 1 H-NMR spectra.
随着反应温度的提高，裂化反应和骨架异构化反应增强，但齐聚反应、氢转移反应和环化反应减弱。
The cracking and skeletal isomerization became more strong with the rise of reaction temperature, while oligomerization, cyclization and hydrogen transfer reaction became weaker.
详细研究了所制备共聚物的高温环化反应，以及所生成的聚甲基丙烯酰亚胺（PMI）的耐热性能。
The cycle-reaction of the MAN-MAA-MAM copolymers at high temperature and the thermal-properties of polymethacrylimide(PMI) were investigated.
本文用概率方法推导出包括溶胶中分子内环化反应的溶胶凝胶分配方程。由此方程计算出的理论值同实验值符合很好。
By the use of probability method, the sol-gel distribution equations including intramolecular reaction of sol are deduced. The theoretical and experimental values are coincident.
初步探讨形成三元环化合物的反应机理。
概述了低价钛诱导的羰基还原偶合反应作为环化关键步骤在西松烷型二萜天然产物全合成中的应用。
The application of carbonyl reductive coupling reaction induced by low valent titanium as the crucial macrocyclization in the total syntheses of cembrane- type diterpenoids are reviewed.
以过氧化氢和甲酸在不同催化剂存在下生成过氧甲酸为环化剂，对亚麻油进行环氧化反应。
This paper described using the reaction of hydrogen peroxide and formic acid in the presence of different catalysts to produce formate peroxide.
四氢萘加氢裂化反应的关键步骤和双环化合物裂解的转化率以及单环化合物的产率与两种催化剂担体的酸性及反应温度有关。
The key steps of hydrocracking of tetralin, the conversion of double ring compounds and the yields of mono-ring compounds were affected by the reaction temperature and the acidity of two catalysts.
结果表明，溶剂的选用与原料中的芳环化合物含量直接影响着反应的深度；
The result showed that the selection of solvent and the aromatic compounds had direct effect on the depth of the reaction.
本论文主要研究了二醋酸碘苯在含氮杂环化合物的合成及有机基元反应中的应用。
In this article, we focus our research on iodobenzene diacetate applied in the syntheses of N-containing heterocycles and elementary organic reactions.
对于硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。
In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.
方法：以2氨基4 ，5二甲氧基苯甲酸为原料，分别经过环化、氯代、取代等反应，合成了五种目标化合物。
The five quinazoline compounds were prepared by using 2 amino 4,5 dimethoxy benzoic acid as original material, which underwent ring closing, halogenation and substitution.
所得的三环化合物经热分解和加氢反应，制备顺式和反式- 2,5 -二取代四氢呋喃。
The cis - or trans-2, 5-disubstituted tetrahydrofurans were provided by the hot decomposition and then hydrogenation of tricycle compounds produced.
以2,6 -二氯吡啶为原料，通过硝化，取代，还原，环化，氧化等几步反应可得到目标化合物。
From 2, 6-dichloropyridine as starting material, we can get the target molecule through nitration, substitution, reduction, cyclization, oxidation etc.
本文综述了模板反应在大环化合物合成中的应用，及含不同配位原子的大环化合物的合成方法。
This paper reviewed the application of the template effect in the synthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors.
综述了利用分子内的光诱导电子转移反应合成中到大环化合物的进展。
Research progress regarding the use of PET reactions on synthesis of medium to large ring compounds and the prospects of their applications were introduced.
以2 -溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。
Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation, cyclization and bromination with total yield of 61%.
然后进行缩合，通过调节反应温度或者使用不同的环化方法，可分别得到茚酮的二聚物及三聚物。
By adjusting the reaction temperature or using different cyclization methods, condensation is carried out, and indanone dimmer and indanone trimer can be obtained respectively.
用热环化过程中分子活动性的变化解释了酰亚胺化反应过程中环化速率的变化。
The change of imidization velocity during thermally staged curing was explained from molecular activity.
着重讨论了RCM反应在合成杂环化合物中的应用。
It is highlighted to illustrate typical examples and situations where RCM can be used to synthesis of heterocycles.
本论文系统地研究了利用串联反应与多组分反应合成一系列结构较为复杂、新颖，部分为原创性母核的杂环化合物。
In this thesis, a series of novel heterocyclic compounds involving in more complex structures and in part original nucleus were synthesized based on domino reactions and MCRs.
本论文系统地研究了利用串联反应与多组分反应合成一系列结构较为复杂、新颖，部分为原创性母核的杂环化合物。
In this thesis, a series of novel heterocyclic compounds involving in more complex structures and in part original nucleus were synthesized based on domino reactions and MCRs.
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