查询词典 chiral

Research progresses in the asymmetric addition of organozinc reagent s to imines in the recent decade are reviewed according to the kinds of chiral ligands.

亚胺的催化不对称加成反应是近年来不对称催化反应中的热点研究领域，从手性配体类型的角度总结了近10余年来有机锌试剂在亚胺不对称加成反应中的应用进展。

S-Naproxen was obtained by asymmetric cross-coupling reaction of 2-bromo- 6-methoxynaphthalene with organozinc reagent of ethyl α- bromopropionate, catalyzed by chiral β-aminoalkylphosphine-nickel complexes.

用β -氨基烷基膦的NiCl2 配合物为手性催化剂，以 6 -甲氧基- 2 -溴萘和α-溴代丙酸酯的有机锌试剂为原料，通过不对称交叉偶联反应合成S --萘普生。

We have designed and synthesized 9,9'-spirobifluorene-based materials and introduced different functional group at 2,2' and 2,2',7,7' positions of 9,9'-spirobifluorene. All of these obtained materials adopted a bichromophoric system configured orthogonally via a chiral spiro center.

中文摘要以旋环双芴为核心结构，分别在2，2'与2，2'，7，7'位置引入不同基团，设计合成出ㄧ系列具双共轭的材料，两相正交相互独立的共轭链，使分子具光学异构物，可避免分子堆叠，提高热稳定性。

We have designed and synthesized 9,9'-spirobifluorene-based materials and introduced different functional group at 2,2' and 2,2',7,7' positions of 9,9'-spirobifluorene. All of these obtained materials adopted a bichromophoric system configured orthogonally via a chiral spiro center.

以旋环双芴为核心结构，分别在2，2'与2，2'，7，7'位置引入不同基团，设计合成出ㄧ系列具双共轭的材料，两相正交相互独立的共轭链，使分子具光学异构物，可避免分子堆叠，提高热稳定性。

The results of asymmetric reduction of latent chiral ketones by carbonyl reductase showed that the enzyme had a high specificity for pentanone in aliphatic ketones and for the acetophenone derivates that contained a withdrawing group at α-position.

利用羰基还原酶不对称催化还原潜手性酮类化合物发现，对于芳香酮类化合物，酶对α位为强电负性基团的底物专一性较强；对于脂肪酮类化合物，酶对五碳脂肪酮的专性较高。

In view of the theory and practice, multi-channel mode-filtered light CE has potentials in chiral separation of the biomolecules and the pharmic molecules, and in study of biological characteristics of the interaction of the bio-molecules with the pharmic molecules.

从理论和实验两方面来看，我们期望多通道模式滤光CE在生物分子和药物分子的手性拆分上、在研究生物大分子和药物分子之间相互作用的生物特征上，可以获得良好的应用。

New chiral phosphonic acids and zirconium phosphonates might have potential applications in asymmetric synthesis, enantioseparation and biochemistry.

手性有机膦酸及新手性层状膦酸-磷酸锆在不对称合成、对映体拆分和生物化学都可能有潜在的应用。

The synthesis of the phthalide dimers and solid-support of the chiral diamines were also concerned.

此外，我们对于合成苯酞二聚体类化合物和手性二胺的固载化进行了尝试。

Considerable attention has really been focused on ionic liquids as "green" alternatives to classical environmentally damaging organic solvents in many fields such as in organosynthesis, material, catalysis, electrochemistry, biochemistry, physicochemistry, separation and so on. However, there have been only a few examples of chiral ILs have been reported so far, and ILs possessing chirality are having been synthesized aimed at application in asymmetric catalytic reaction.

离子液体在许多领域如电化学、有机合成、催化、生物化学、物理化学、材料及分离等的绿色替代溶剂技术引起了人们的重视，然而，有关手性离子液体的合成与应用的报道比较少，含有手性片段的离子液体不断被合成出来并期望在不对称催化反应中得到应用，但是成功的例子不多，使用手性离子液体在不对称催化反应中还在初始的探索阶段。

That is one of the best results in asymmetric catalyzed pinacol coupling reaction, which indicates that the tetradentate chiral Schiff-bases with C〓 symmetry and rigid structure may be developed into practical applications.

这说明，具有C〓对称性且其核心结构具有刚性的四齿Schiff--Base是最有希望获得有实用价值的新的手性化合物。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。