查询词典 synthesis method

Carbonyl arsonium ylides, which reacted with almost equimolarphenylselanyl iodide, were conversed into α-phenylseleno arsonium ylides in thepresence of triethylamine, affording a new method for the synthesis of α-phenylseleno arsonium ylides.

在弱碱三乙胺存在下半时，稳定的α-羰基胂叶立德和几乎等摩尔量的苯硒基碘作用，转化成α-苯硒基胂叶立德。提供了一个合成α-苯硒基胂叶立德的新方法。

Summarized the recent years benziminazole class compound different synthetic method, specially microwave synthesis application.

综述了近年来苯并咪唑类化合物的不同的合成方法，特别是微波合成的应用。

Aim To develop a concise method for the synthesis of bicyclic azasugar and thiosugar with novel scaffold.

目的 发展一种简洁合成具有新型骨架的双环氮杂糖和硫杂糖的新方法。

According to the result, we believed that the reason resulted in the low sensitivity was that the marker residue compound MQCA structure has changed after conjugated with protein and the antibody induced by the conjugation could not recognize the free MQCA in the ci-ELISA. Therefore we designed some hapten which could reserve the marker residue structural speciality mostly. After synthesis route selection and optimum, the hapten 7-Hydroxymethyl-3-methyl-quinoxaline-2-carboxylic acid was synthesized, used 4-methyl-2-nitroaniline as the start material via six steps, such as oxidation cyclization, bromize reaction, hydrolysis, Beirut reaction, reduction, hydrolysis. This work established basis for producing the high affinity antibody and developing the sensitive ELISA residue detection method.

本论文认为导致ELISA检测灵敏度较低的原因，是残留标示物和蛋白偶联后的特征结构发生改变，诱导产生的抗体不能够对游离MQCA很好的识别，因此，本论文设计了能够最大化保留MQCA结构特征的系列半抗原结构，并对其合成路线进行了筛选和优化，最终以对甲基邻硝基苯胺为起始原料，经氧化环化、溴代、水解、Beirut缩合、还原、水解六步反应制备含羟甲基结构的MQCA衍生物7-羟基甲基-3-甲基-喹噁啉-2-羧酸，为制备对游离残留标示物高亲和力的抗体，高灵敏度的ELISA残留检测方法的建立奠定基础。

A method for synthesis of isobutyl acetate based on ceric sulfate as catalyst was developed.

以冰醋酸、异丁醇为原料，硫酸高铈为催化剂合成乙酸异丁酯。

In recent years, the new technology has been used in the synthesis of chalcone compounds, under the 343 K condition carrying on the response in the temperature. It takes benzaldehyde and acetophenone as raw material, BF4 as resolver and the hydrotalcite as the catalyst, the yield of chalcone can reach 98.5%. This method has some advantages including shorter reaction time, higher yield and simpler operation.

近年来查尔酮化合物的合成采用了新技术，是以苯甲醛和苯乙酮为原料，BF4作为反应溶剂，水滑石为催化剂，在温度为343 K的条件下进行反应，查尔酮产率可以达到98.5%，该法具有反应时间短、操作简便、收率高等优点。

Asymmetric synthesis using chiral phase transfer catalyst is a new method that has just been developed in recent years.

利用手性鎓盐作为相转移催化剂进行不对称合成是近年来刚刚发展起来的一种新的合成方法。

In modem organic synthesis, it is an important method to synthesize optical pure compoundsfrom appropriate chiral pool.

在当代的有机合成中，采用适当的手性源来合成光学纯的化合物是一种重要的方法。

As a foundation raw material, propylene oxide was reacted with phosgene use the process tradition method that mean low temperature and high temperature two phosgenation sections to synthesis bis chloroformate .

以聚氧化丙烯为基础原料，与光气在合适的溶剂下经过传统的低温、高温两段法光气化反应合成氯甲酸二酯，然后再与芳香多胺在合适的溶剂和催化剂下反应，脱除溶剂后得到一种新型的端胺基聚醚。

An environmentally benign method for synthesis of cinnamaldehyde with near-critical water as reaction medium was proposed.

提出了一种以水为反应介质合成肉桂醛的新方法。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失