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In this chapter, we report the synthesis of an alkyl imidazo lium salt supported chiral sulfonamide ligand and its use and recycling in enantiosel-ective reduction of prochiral ketones to optically active secondary alcohols.

在这里我们报道了一种离子液体接枝的磺酰胺手性配体以及在前手性酮的不对称还原反应中的应用,获得了较好的对映纯过量,实现了手性配体的回收和重复使用。

The preparation of a novel chiral sulfonamide alcohol derived from natural camphor and its application in the titanium tetraisopropoxide-promoted enantioselective addition of diethylzinc to benzaldehyde is described.

由天然樟脑合成了一个新手性磺酰胺醇,并对其在二乙基锌对苯甲醛的对映选择性加成中的催化性能进行了研究,获得了73%化学产率和

The invention belongs to the synthesis technical field of pharmaceutical intermediates, and more particularly relates to a preparation method of Cis-4-(2-bromine ethylene) benzene sulfonamide.

本发明属于药物中间体合成技术领域,具体涉及一种顺式-4-(2-溴乙烯基)苯磺酰胺的制备方法。

As to the P—methylbenzene sulfonamide plasticizer, less than 10% is needed to meet the requirement of brittle— toughness transition. Whereas, for butyl P—hydroxybenaoate, 20% is needed for the plasticate system to reach the brittle—toughness transition.

对于苯磺酰胺增塑剂,只需不足10%的用量就达到脆—韧转变,而苯甲酸酯类增塑体系则需要20%的用量才能达到脆—韧转变。

Effect of several reaction factors on the yield of the synthesis of methane sulfonyl chloride is discussed.

阐述了利用二甲基二硫在相转移催化剂作用下,于盐酸介质中经氯气直接氧化,一步合成甲烷磺酰氯的工艺过程,讨论了几个主要反应因素对产物收率的影响,确定了适宜的工艺条件。

On the above mentioned basis, the process method of preparing continuously methane sulfonyl chloride was suggested.

用合成反应经产品分离后的母液作反应介质,合成了甲烷磺酰氯产品,提高了反应收率,增加了经济效益,减小了环境污染,获得了综合利用的效果。

OBJECTIVE To obtain the key intermediate of almotriptan ,1-(4-Aminophenylmethane sulfonyl)pyrrolidine.

目的合成得到选择性5-HT1B/1D受体激动剂阿莫曲普坦的关键中间体对氨基苯甲磺酰吡咯烷。

By azo compound became chromophore monomer disperse red -19, and through Sulfonyl of the compound was synthesized by the C, and through 1HNMR its structure was characterized, the results show that the synthesis of compounds C of very high purity, synthetic polymers can meet at the request of the monomer, but also of the compound D, through 1HNMR its characterization, showed that high purity compounds D, is expected to be functional after the adoption of To all the excellent performance PEEK electro-optic polymer materials.

本文通过偶氮化合成了生色团单体分散红-19,并通过磺酰化反应合成得到了化合物C,并通过核磁共振氢谱对其结构进行了表征,结果表明,所合成的化合物C的纯度非常高,完全能满足聚合物合成时对单体的要求,同时也合成了化合物D,通过核磁共振氢谱对其结构表征,显示化合物D纯度很高,应有望通过后功能化合成出各种性能优良的聚醚醚酮电光高分子材料。

Keywords Mixed indicator two phases titration;Alkyl sulfonyl chloride;Peroxide of hydrogen

混合指示剂两相滴定;烷基磺酰氯;过氧化氢

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。

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Plunder melds and run with this jewel!

掠夺melds和运行与此宝石!

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。

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单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。