Carbon cations are important organic reaction intermediates, and hydrogen shift is a key path through which carbon cations isomerizes.
正碳离子是重要的有机化学反应中间产物，而氢原子移位则是正碳离子异构化的主要反应途径。
The results showed that there is the reaction separation circular loop phenomenon for complex reaction systems including intermediates.
计算结果表明：对含中间产品的复杂反应体系，存在反应—分离循环圈的现象；
Silicone polyesters resins are the reaction product of organo-siloxane intermediates and a suitable polyester resin intermediate (typically characterized by the absence of drying oils).
硅改性聚酯树脂是有机硅氧烷和相应的聚酯树脂中间产物反应而得到的产品。
By using this method, a synthetic data matrix for an autocatalytic reaction with two intermediates has been successfully resolved.
应用此方法，一组含有两个中间体的自催化反应的模拟数据得到了成功的解析。
The formation and disappearance of intermediates are largely affected by the reaction temperature and substrate concentrations.
反应温度和底物浓度对中间体的形成和消失有较大的影响。
Two reaction pathways, the concerted and the stepwise pathways were considered through neutral intermediates.
考虑了两条可能的反应途径：中性协同的和中性分步的机理。
METHODS: The title compounds were synthesized by acylation of twelve acyl chlorides and two intermediates prepared by Friedel Crafts reaction, lengthening of carbon chain, hydrolysis and cyclization;
方法：通过付克反应、碳链延长、水解和环合反应得到两个关键中间体，然后通过酰化反应制得各种酰胺化合物；
The results show that the method can detect the content of cefixime intermediates effectively and economically. This HPLC method can be used to monitor the cefixime reaction process.
结果表明，该法能有效检测头孢克肟的中间体，具有柱效高、经济等优点，可用于头孢克肟反应过程的监测。
The characteristics of positronium, a kind of exotic atoms, and the applicability of using it to probe the reaction mechanism and the active intermediates are briefly introduced.
介绍了一种奇特原子-正电子素的基本性质及作为探针研究化学反应历程、探测中间产物的实用性。
During the experiment, hydrolysis and reduction have been implemented in one-pot, which is close reaction, reduces the losses of intermediates.
在氯唑沙宗清洁合成实验研究中，水解反应和还原反应在一个反应釜内完成，实现了封闭反应，减少了中间体损失。
Results: Two mono-hydroxy intermediates were produced during the diketone reduction process and its reverse reaction, which were separated and structurally confirmed.
结果：两个单羟基中间产物产生在双羰基还原及其逆反应过程中，并被分离纯化和鉴定。
Activation of leukocytes after PTCA can trigger a serial cascade of pathophysiologic reaction, releasing some inflammation intermediates lead to restenosis.
PTCA后白细胞的激活可能触发一系列病理生理联级反应，释放某些炎症介质，促进血管平滑肌增殖导致再狭窄；
Activation of leukocytes after PTCA can trigger a serial cascade of pathophysiologic reaction, releasing some inflammation intermediates lead to restenosis.
PTCA后白细胞的激活可能触发一系列病理生理联级反应，释放某些炎症介质，促进血管平滑肌增殖导致再狭窄；
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