查询词典 sulfonyl

Nitro-4-methylsulfonylbenzoic acid was prepared from 4-toluene sulfonyl chloride by the reaction of Alkylation (in the condition of sodium sulfite and baking soda), Nitrification (in the condition of nitric acid and vitriol) and Oxidation reaction (in the condition of nitric acid and catalyzer).

研究了以对甲苯磺酰氯为起始原料，首先通过亚硫酸钠和碳酸氢钠的水溶液进行烷基化、其次在浓硝酸和浓硫酸加热回流的条件下峭化、最后在浓硝酸和催化剂的条件下进行氧化，3步反应合成了玉米田高效除草剂甲基磺草酮的重要中间体2-硝基－4-甲磺酰基苯甲酸。

One red crosslinking polymeric dye is prepared in mixed solvent of water and tetrahydrofuran(Schotten-Baumann reaction)from Disperse Red 3B sulfonyl chloride and polyvinylamine.The sulfonamide group in polymeric dye is confirmed by IR.

利用Schotten-Baumann反应，在水与四氢呋喃的混合溶剂中合成了1支新型的红色聚乙烯胺型可交联高分子染料，用红外光谱证明了所合成的染料中磺酰胺基团的存在。

The analysis of SAR reveals that the activities of target compounds are closely associated with the electron-withdrawing substituents at the para position of 1-aryl-1, 2, 4 -triazoles as well as with the substituents such as sulfonyl and methylthio groups at the 3 position of 1, 2, 4 -triazoles; And the introduction of sulfamoyl moiety at the para position of 5-aryl-1,2,4-triazoles also has significant influence on the anti-inflammatory activity of these compounds.

构效关系分析发现，在三唑环1位芳基的对位引入F、Cl、Br吸电子基团以及3位引入磺酰基和甲硫基，对抗炎活性有重要的意义；在三唑环5位芳基的对位引入氨磺酰基，对抗炎活性有较大影响。

It was found that activated sludge can degrade effectively four of them except chlorinated paraffin and alkyl sulfonyl chloride, so it is suggested that these four kinds of fatliquors are suitable for leather processing concerning their environmental.

研究发现，硫酸化牛蹄油、硫酸化蓖麻油、硫酸化鱼油和卵磷脂易于生化处理，能够被活性污泥高效降解；然而活性污泥不能降解氯化石蜡和烷基磺酰氯，特别是烷基磺酰氯还会抑制污泥的生物降解活性。

In order to improve their water solubility, 4"-fatty amido-3"-sodium carboxylate azobenzene-4-sodium sulfonates were synthesized. They are azo compounds with two hydrophilic groups of carboxyl and sulfonyl. They decrease the surface tension in dilute solution slowly, and show some surfactivity, but are not surfactants. The probable reason is their relative strong hydrophile. Furthermore, their colors are not fresh and far from our destination.

为了改善其水溶性，改用对氨基苯甲酸为原料合成了4′-脂肪酰氨基-3′-羧酸钠偶氮苯-4-磺酸钠盐，以偶氮结构为主的亲水基团上连有羧酸基和磺酸基两个亲水性较强的基团，但可能由于其亲水性太强，在稀溶液中只能缓慢地降低溶液的表面张力，具有一定的表面活性，但不是表面活性剂，而且颜色不鲜艳，距离我们的目标较远。

Based on a survey of the mechanism for reactive dyes containing β-hy-droxy-ethyl sulfonyl sulfuric ester on the cellulosic fibre, and the structures of non-ionic nature of disperse dyes , a new range of reactive disperse dyes for polyester cotton blends is proposed.

本文综合分析了含β-羟乙基碸硫酸酯基活性染料的染棉机理和聚酯纤维用非离子型分散染料的结构特点，提出了一类用于涤棉混纺织物的含β-羟乙基碸硫酸酯基活性分散染料。

In this paper, the effects of different catalyst combinations on the synthesis of α-chloro-dodecanoic acid were investigated, in which a series of acyl chlorides such as 4-toluene sulfonyl chloride, dodecanoyl chloride, chlorosulphonic acid , etc.

本文从烯酮式反应机理出发，以α-氯代十二酸的合成为模型，对酰氯化试剂(对甲苯磺酰氯、十二酰氯、氯磺酸等)和质子酸催化剂(如H型离子交换树脂、氯磺酸、对甲苯磺酸、醋酸等)进行组合和选择，并与文献报道的特殊添加剂乙酐比较，研究不同催化体系在酸催化合成α-氯代脂肪酸时的催化作用。

In the second part,we alternated amines to sulfonamides under the same reaction system and found that N-sulfonyl aldimine was formed.

在同样的条件下，使用磺酰胺替代普通胺，反应会生成N-磺酰基亚胺。

The invention relates to a mixed additive used in lithium secondary battery electrolyte, which is characterized in that: its components comprises that biphenyl at 0.5-95.4%, phenylcyclohexyl at 1.1-93.8%, vinylene carbonate at 0.4-93.2%, tertiary carbon alkyl benzene at 0.5-96.5%; and ethenyl sulfonyl benzene at

本发明公开了一种锂离子二次电池电解液用混合添加剂，其特征在于：组分与重量％分别是：联苯类0.5％～95.4％；环己基苯类1.1％～93.8％；碳酸亚乙烯酯0.4％～93.2％；叔碳烷基苯0.5％～96.5％；乙烯基硫酰苯0.5％～95.8％。

The results showed that expression plasmid pET22b-lysB was constructed successfully. Highly purified recombination protein was obtained 33.2 mg from 1 L LB culture medium. A screening for His-LysB activity on esterase and lipase substrates confirmed the lipolytic activity. With p-nitrophenyl butyrate as substrate, the thermal stability of the enzyme was poor when the temperature was above 30oC. The enzyme exhibited higher stability at pH 5.0–9.5. The optimum temperature and pH for the lipolytic activity of His-LysB were 23oC and 7.5 respectively. Under the optimum conditions, the specific activity of His-LysB was 1.3 U/mg. Zn2+, Cu2+, Mg2+, Mn2+and phenylmethane sulfonyl fruoride severely inhibited the lipolytic activity of His-LysB.

结果表明：成功构建了pET22b-lysB表达载体，并从1 L的LB培养物中获得了33.2 mg高纯度重组蛋白；His-LysB具有分解脂肪的能力，属于脂肪酶；生物化学特性分析表明：丁酸对硝基苯为水解底物，His-Lys热稳定性不佳，30℃以下比较稳定，随着温度的升高，稳定性逐渐降低；该蛋白具有较高的pH值适应性，pH 5.0~9.5范围内稳定性较高；在23℃和pH 7.5时酶活力最高，其比酶活为1.3 U/mg；金属离子Zn2+、Cu2+、Mg2+、Mn2+和苯甲基磺酰氟抑制剂对酶活具有强烈的抑制作用。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。