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Synthesis of novel sulfonamide-prolinols and their application on the asymmetric addition of diethylzinc to benzaldehyde.

三、研究了脯氨酸衍生的新型手性磺酰胺-氨基醇的合成及其催化二乙基锌对苯甲醛的不对称加成反应 1。

The results indicate that the carbon and the oxygen in the —COOH group,and the nitron in —2—NH group come into formation of different large π bonds with the benzene rings,and there is a dihedral angle of 63.2° because of place blocking and conjugate effect.

结果显示,该分子羧基的碳氧原子、磺酰胺基的氮原子与苯环形成不同的离域大π键,空间位阻效应和共轭效应使两个苯环不在同一平面,二面角为63.2°。

The polymer integrates the structural features and performances of nylon and polysulphonamides as well as fluoric polymers.

该聚合物综合了尼龙和聚磺酰胺以及含氟聚合物的结构特点和性能。

E-44 epoxy resin,"¨" PF2A2-131, PF2A2-141 Brand Bakelite powder,"Golden Harvest card" 40 percent different, such as rice blast net EC was namedproducts, o-toluene sulfonamide amide, sodium benzoate eight product quality by the title of Zhejiang Province; 25% quinalphos National New Product by Product Jinlong Award.

熊猫牌"E-44环氧树脂、"熊猫牌"PF2A2-131、PF2A2-141牌号酚醛塑料粉、"嘉禾牌40%异稻瘟净乳油等被评为部优产品,邻甲苯磺酰胺、苯甲酸钠等八个产品获浙江省优质产品称号;25%喹硫磷产品获国家新产品金龙奖。

In addition to this,we discussed the stereochemistry in the synthesis of polyhydroxyα-amino acid based on chiral tert-butanesulfinyl amide.

除此之外,我们还系统讨论了基于叔丁基亚磺酰胺的多羟基取代α-氨基酸合成方法中的立体化学问题。

According to the stereochemistry of products, we proposed that the probably proceeding mechanism and analyzed the stereo controlling effection of N-tert-butanesulfinamide in coupling reaction.

我们对反应进行了深入研究,并根据产物的构型,推测了可能的反应机理和N-叔丁基亚磺酰胺辅基在反应中的立体控制。

The p-aminobenzene sulfpnamide group was connected to stilbene skeleton of stilbenes, and many twin drugs were prepared.

由拼合法将对氨基苯磺酰胺基团接到芪类化合物母体二苯乙烯骨架上,可得到多种孪生药物。

The results showed that mice in the photoallergy group pretreated with sulfanilamide and UV irradiation developed evident ear swelling at 24h after challenge and the histopathology was characteristic of DTH, while control mice showed no reaction, indicating that sulfanilamide is a kind of chemical with photoallergenicity.

结果显示,受试物对氨基苯磺酰胺仅在光变态反应组中于激发后24小时出现耳肿胀反应,耳组织学改变符合DTH的病理特征,在其余两个对照组中均不出现耳肿胀反应,证实为光变应性药物。

Methods:The target compound was synthesized using 4-hydrazino-N-methyl-benzyl-sulphonamide hydrochloride and 4,4-dimethoxy-N,N-dimethyl butylamine as the starting materials,PPA and sodium dihydrogen phosphate instead as catalysts and isopropyl ether and acetone as solvents for recrylstallization,via 4-step reactions:condensation,rearrangement,cyclization and salt formtion.

以4-肼基-N-甲基-苄基磺酰胺盐酸盐与4,4-二甲氧基-N,N-二甲基-丁胺为起始原料,改用多聚磷酸和磷酸二氢钠作为催化剂,后处理采用异丙醚和丙酮作为重结晶溶剂,经缩合、重排、环合、成盐的4步反应合成琥珀酸舒马曲坦。

We screened a set of Lewis base organocatalysts derived from chiral pipecolinic acid and tert-butanesulfinamide for the reduction of-N-Cbz-1- phenylpropenamine, including newly designed ones and some of those previously developed in our lab. However, only moderate stereoselectivities, albeit high yields were obtained.

在本课题组前期研究的基础上,我们筛选并设计了一系列以手性哌啶酸和叔丁基亚磺酰胺为母体的有机小分子路易斯碱催化剂,它们能催化三氯氢硅对-N-苄氧羰基-1-苯基丙烯胺的不对称还原,获得很高的收率和中等的对映选择性,并且具有很好的底物普适性。

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推荐网络例句

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。