查询词典 cinchonine

A cinchonine imprinted monolithic polymer was directly prepared in a fused capillary column by in-situ polymerization.

借助于提高流速和使用梯度洗脱在其上实现了快速手性分离。

UV and fluorescence spectrometry,〓H-NOESY charactered the non-covalent interaction between cinchonine and CDs in solution. The results indicated that the possible stoichiometry of complex formation is 1: 1 (guest: host ratio) and 2: 1 inclusion complexes coexistence simultaneously in solution.

用紫外光谱、荧光光谱、二维核磁共振等手段研究了辛可宁与β，γ-环糊精在溶液中的非共价作用，发现它们之间是以1：1结合以及2：1结合两种方式模式的方式存在的。

The fluorescence anisotropy using steady-state fluorescence polarization method was measured for the solution of β-CD and cinchonine mixed and sonicated for 1h. The anisotropy values for the solution increased with the increase of the concentrations of β-CD, which implied the existence of some complexes of large size or nanotube structure. Many type of large size complexes formed between β-CD and Cin under high concentrations in gas phase were characterized by ESI-MS in moderate experiment conditions.

将辛可宁与环糊精的混合溶液超声1个小时后，用稳态荧光偏振方法测定溶液的各向异性值，发现随着环糊精浓度的增大，溶液的荧光各向异性不断增强，这意味着溶液中形成了大尺寸即纳米级结构的环糊精与辛可宁复合物；用温和的质谱测定条件表征发现高浓度的β-CD与辛可宁在气相中可形成各种类型的大尺寸复合物。

The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α－羟基酮对硝基烯烃的加成反应研究研究了α－羟基酮类化合物与Michael受体硝基烯烃类化合物的反应，通过分析和实验发现在Zn2和辛可宁的作用下α－羟基苯乙酮能够与硝基烯烃化合物顺利反应，在优化的条件下以95%产率和3：1的Dr主要得到顺式产物，其中顺式产物的ee值最高为72%。

The results of the reaction show that better regioselectivity is obtained when Cd2+ is used as additive and give stereoselective product when cinchonine is used as chiral additive.Keywords: NaBH4, Regioselective,Stereoselective,Benzoyl acetone,Metal ion

结果发现，不同的金属离子添加剂使反应出现不同的化学选择性，而Cd2+离子对苯甲酰丙酮的还原具有较好的化学选择性，同时在辛可宁存在条件下得到了对映体过量的产物。

METHODS: Inexpensive quinine and cinchonine were transformed to 9NH2quinine and 9NH2cinchonine, which reacted with 4chlorobenzoyl chloride to afford 2 novel chiral ligands. The AD reactions of olefins were performed in H2OtBuOH (1∶1) using the 2 ligandsK2OSO24 as catalysts.

以价廉易得的奎宁和辛可宁为原料，经过结构转换得到9氨基奎宁和9氨基辛克宁，进而与对氯苯甲酰氯反应制得两种新型手性配体，并将其用于锇催化的烯烃的不对称双羟化反应。

A new chiral quaternary ammonium salt 1a was synthesized by the reaction of cinchonine and(2,4,6-)trimethyl benzyl chloride.Etherification between 1a and benzyl bromide,allyl chloride,or methyl give corresponding etherified quaternary ammonium salts 1b,1c,and 1d.

由辛可宁和2，4，6-三甲基苄氯，合成了一种新的手性季铵盐(1a)，并进一步用苄基溴、碘甲烷和烯丙基氯对分子中的羟基进行醚化，得到相转移催化剂1b、1c和1d。

A nonaquous capi l l ary e l ecbophoretic chira l separation of l , l '-bi-2-naphtho l with a new chira l se l ector N-benzy l cinchonine ch l oride is described in this paper.

利用新的手性选择剂苄基氯化辛可宁，在非水相中成功地分离了联萘酚对映体，并对分离的机理作了初步地探讨。

It is demonstrated that the chiral quaternary ammonium salts catalysts exhibit promising catalytic properties for the substrate. Part III: The synthesis and the characterizing of the macroporous aminomethyl resin-supported cinchona alkaloid complexes and the study on its catalytic properties The part consists of two subsections. the macroporous aminomethyl resin -supported cinchona alkaloid complexes were synthesized by the stuff (cinchonine, quinine and macroporous aminomethyl resin). Their structures were characterized by means of elemental analysis, XPS, TG/DTA; the chiral polymer-supported complexes were first used as catalysts for the reduction of ketones. Their catalytic properties for the reduction processes were investigated. The comparison of the products e.e., the conversion of the substrate among different reduction processes was employed with determined by HPLC. The effects of the time, the temperature, the ratio of catalyst to substrate, reaction solvent as well as the recycle times were also discussed.

第三章聚-4-氨甲基苯乙烯负载金鸡纳碱金属络合物的合成与表征及其不对称催化性能研究本章分为两节，以辛可宁和奎宁及聚-4-氨甲基苯乙烯为原料，合成了4种聚-4-氨甲基苯乙烯负载金鸡纳碱络合物催化剂，并对它们的结构用元素分析、X-射线光电子能谱、TG/DTA等几种测试手段进行了表征；首次将所合成的手性高分子负载的金属络合物用于催化芳香酮不对称还原反应，详细研究了所得的手性高分子负载的金属络合物对不同底物的催化性能，用HPLC等分析手段定量检测了还原过程的底物转化率及其产物对映异构体选择性，并考察了反应时间、反应温度、催化剂和底物投料比、反应溶剂和循环次数对催化性能的影响。

Amino(9-deoxy)epicinchonine was synthesized from cinchonine through the Mitsunobu reaction and was treated with p-toluenesulfonyl chloride,4-chlorobenzene sulfonyl chloride respectively to give two new chiral sulfonamide s.

以辛可宁为原料，经Mitsunobu反应合成了9-氨基(9-脱氧)表辛可宁，然后分别与对甲苯磺酰氯、对氯苯磺酰氯反应，合成了两个新手性磺酰胺，其结构经红外光谱和核磁共振确证。

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。