Cyclization occurs readily with dilute alkali.
遇到稀碱就容易环化。
A possible mechanism for the cyclization reaction was suggested.
提出了可能的环化反应机理。
The major process to study DNA instinctive flexibility is DNA cyclization assay.
DNA分子的环化是研究其本身柔韧性的主要方法。
The appropriate reaction conditions of cyclization reaction: NaOEt was 1.4 mole eq.
合环反应的条件为：乙醇钠的用量为1.4摩尔当量；
The mechanism was discussed in the proton acid catalytic reaction of furan phenol cyclization.
探讨了呋喃酚环合反应质子酸催化机理。
The phenomonon was explained in view of the mechanism of chemical cyclization of poly(amic acid).
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 mechanism of cyclization of DAT and the principle of the anion extraction were also discussed.
同时，探讨了DAT的成环反应历程，阐述了阴离子高效萃取的原理。
The theory involving the cyclization effect was in excellent agreement with the experimental data.
经过适当内环化校正的理论与实验数据很好地符合。
The occurrence of SBR cyclization was confirmed by the primary analysis of ir and 1 H-NMR spectra.
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 method adopts the amino resin to synthesize carbetocin by the solid phase cyclization technology.
本发明采用氨基树脂，固相环合技术，合成卡贝缩宫素。
The conditions of reaction of cyclization were moderate, the purity and yield of the product was higher.
环合反应的条件缓和，产品收率和纯度高，在四氢咔唑类化合物的化学制备中具有重要参考价值。
According to the experimental results, it was assumed that the cyclization was taken by nucleophilic attack.
根据实验结果，我们推测反应的关键步骤为亲核进攻。
METHODS Bretazenil was synthesized from 3-bromoaniline by cyclization, oxidation and ring-enlargement reaction, etc.
方法以3-溴苯胺为起始原料，经过成环、氧化、扩环等反应得到目标产物。
METHODS Cilnidipine was synthesized from cinnamyl alcohol by esterification, feminization and condensation - cyclization.
方法以肉桂醇为原料，经酯化、氨化和缩合-环合而得。
The resin (b) is preferred to be conjugated diene polymer cyclization material with unsaturated bond decrement rate more than 10%.
树脂(B)优选为不饱和键减少率为10%以上的共轭二烯聚合物环化物。
Levocetirizine dihydrochloride was prepared from benzoyl chloride by acids lation hydrogenation cyclization with an overall yield of8.05%.
以苯甲酰氯为原料，经酰化，还原，环合等反应合成左旋西替利嗪盐酸盐，反应总收率为8。05%。
Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05%.
以苯甲酰氯为原料，经酰化，还原，环合等反应合成左旋西替利嗪盐酸盐，反应总收率为8.05%。
From 2, 6-dichloropyridine as starting material, we can get the target molecule through nitration, substitution, reduction, cyclization, oxidation etc.
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。
That is dehydrogenation and cyclization of paraffins, dehydrogenation and aromatization of naphthenes, and cracking reaction to form C 5 lighter products.
集总组分之间主要发生烷烃脱氢环化、环烷烃脱氢芳构化和加氢裂化反应。
In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.
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。
METHODS The compound was synthesized through the reaction of cyclization, split, bromination et al and using 1,3-propyl bromide and ethyl acetoacetate as raw materials.
方法以1，3-溴丙烷与乙酰乙酸乙酯为原料经环合、开环、溴代等反应合成。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
讨论了以草酸二乙酯为原料，经过克莱森缩合、环合、氨解反应合成5甲基异唑3甲酰胺工艺的改进。
Methods Apraclonidine was synthesized from P-Nitraniline by reaction with reduction, adding protection group, formylation, chlorination, cyclization, off-protecting group.
方法采用对硝基苯胺为原料，经还原、加保护基、甲酰化、氯化、环合、脱保护基六步反应法可进行化学合成。
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%.
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%。
Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
筛选以2-溴代丁酸为起始原料，经氨解，酯化，酯胺解，拆分，环合五步反应制得左乙拉西坦。
Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
筛选以2-溴代丁酸为起始原料，经氨解，酯化，酯胺解，拆分，环合五步反应制得左乙拉西坦。
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