目的是与不同的芳香醛进行环合和缩合，以合成一系列的金酮。
The objective is to cyclize and condense with different aromatic aldehydes to synthesize a series of aurones.
探讨了呋喃酚环合反应质子酸催化机理。
The mechanism was discussed in the proton acid catalytic reaction of furan phenol cyclization.
我的意思是钩环合不上。
所得公式可适用于多个环合点的热环合反应。
These formulae derived can be used to the ring formation with multi-points ring formation reactions.
提出通过循环合并发掘节点间流水并行的方法。
A new approach based on loop fusion is presented to exploit pipelining parallelism.
结果：所合成的两个手性d环合成子光学纯度高。
RESULTS: The two novel D ring synthons are of high optical purity.
方法以肉桂醇为原料，经酯化、氨化和缩合-环合而得。
METHODS Cilnidipine was synthesized from cinnamyl alcohol by esterification, feminization and condensation - cyclization.
本文主要研究手性模板作用下的光环合反应的立体选择性。
The aim of this research is to study the stereoselectivity of photocyclization reaction in the act of chiral template.
本发明采用氨基树脂，固相环合技术，合成卡贝缩宫素。
The method adopts the amino resin to synthesize carbetocin by the solid phase cyclization technology.
然后再与A环合成子偶联、关环、脱保护完成目标产物的全合成。
Then coupling with A ring synthon, closing, deprotection, the aim product was synthesized finally.
三抵消钩环合成革带为至高无上的舒适性提供了一个可定制的适合。
Three offset hook-and-loop synthetic leather straps offer a customizable fit for supreme comfort.
报导了杀鼠酮钠盐的用途及制备方法，并讨论了环合反应的最佳条件。
In this article, the process and preparation of valone are reported. Moreover, its best condition of linking reaction was also discussed.
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。
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.
用氯乙酰巴比妥酸在无水乙酸钠存在下环合后再与不同的芳香醛缩合合成噢类化合物。
In existence of the anhydrous sodium acetate using 5 chloroacetylbarbituric acid to cyclize and condense with different aromatic aldehydes to synthesize a series of aurones.
采用环合法合成吡虫啉具有产品纯度高、原料成本低等优点，是吡虫啉生产的最佳工艺路线。
The process so presented achieves merits of product with high purity and low cost in raw material.
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。
The conditions of reaction of cyclization were moderate, the purity and yield of the product was higher.
并且预测了四硫富瓦烯硫桥稠环合C_（60）衍生物可能在基态下产生长寿命的电荷分离态。
A long-lived charge-separated state may occur in the derivative of TTF-S-C_(60).
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。
Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
环合废液脱水后，分离塔回流比为15，理论板为40时，回收乙醇中甲醇的质量分数小于10%。
The recovered ethanol with less than 10% methanol can be purified in a dehydration tower and a separation tower with 40 theoretical plates and a reflux ratio of 15.
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%。
Levocetirizine dihydrochloride was prepared from benzoyl chloride by acids lation hydrogenation cyclization with an overall yield of8.05%.
对比研究了不同退火温度对贝氏体球铁辊环组织和硬度的影响，提出了贝氏体球铁辊环合适的退火温度。
The influences of different annealing temperature on the structure and hardness was compared and investigated. The proper annealing temperature for the bainite nodular iron roller ring was proposed.
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。
This paper reports the improvement on the synthesis of 5 methylisoxazol 3 formamide by Claisen condensation of diethyl oxalacetate followed by cyclization and ammonolysis.
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。
Methods Apraclonidine was synthesized from P-Nitraniline by reaction with reduction, adding protection group, formylation, chlorination, cyclization, off-protecting group.
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；
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;
以对甲苯乙酮和三氟醋酸乙酯为原料，经缩合、环合两步反应得到2型环氧酶抑制剂赛来昔布，总收率为6 7%。
Celecoxib as a cyclooxygenase-2 inhibitor, was synthesized from p-methylacetophenone and ethyl trifluoroacetate by successively condensation and cyclization in 67% overall yield.
方法：以氨基乙醛缩甲醇制备的N （2 ，2二甲氧基乙基）胍硫酸盐经盐酸催化环合制得2 氨基咪唑硫酸盐。
METHODS:N (2,2 dimethoxylethyl)guanidine sulfate from aminoacetaldehyde dimethyl acetal was treated with concentrated HCl to get 2 aminoimidazole sulfate.
研究了一种直接环合的方法，用2-氯-2氯甲基- 4-氰基丁醛与三氯氧磷反应来制备2-氯-5-氯甲基吡啶。
A synthetic method of direct cyclization was researched that 2-chloro-2-chloromethyl-4-cyanobutyraldehyde was reacted with phosphorus oxychloride to get 2-chloro-5-chloromethylpyridine.
研究了一种直接环合的方法，用2-氯-2氯甲基- 4-氰基丁醛与三氯氧磷反应来制备2-氯-5-氯甲基吡啶。
A synthetic method of direct cyclization was researched that 2-chloro-2-chloromethyl-4-cyanobutyraldehyde was reacted with phosphorus oxychloride to get 2-chloro-5-chloromethylpyridine.
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