查询词典 chiral

Since Zinke discovered calixarene in 1940s, the synthesis of calixarene was improved continuously and more calixarene derivatives, like ester, ether, ketone derivatives, calixcrowns, chiral calixarenes, heteroatom calixarenes and calix polymers etc., were obtained.

自二十世纪四十年代Zinke等发现杯芳烃以来，越来越多的杯芳烃衍生物如杯芳烃的酯、酮、杯芳冠醚、手性杯芳烃、含杂原子的杯芳烃、生色杯芳烃、杯芳烃聚合物等被合成出来。

Firstly, a Ni complex 2 of glutamic acid Schiff base was formed in a 98% yield from chiral auxiliary 2-benzopheone (1) with nickel chloride hexahydrate and L-glutamic acid.

报道了一种采用谷氨酸席夫碱Ni配合物共保护L-谷氨酸α-氨基和α-羧基合成谷胱甘肽(γ-L-谷氨酰-L-半胱氨酰-甘氨酸)的新方法。

Biocatalytic asymmetric synthesis renders an environmental benign, simple, efficient and high steroseletive method for production of chiral β-hydroxy acid derivatives.

生物催化的不对称合成方法以其绿色环保、简洁高效及高立体选择性已成为一个新兴的研究热点。

The synthesis process comprises using chiral phosphorus acid as catalysis, synthesizing 2-(4, 7-indoline) compound in high efficiency and highly enantioselective by using sulfur imide and 4, 7-indoline compound, and products can be used to prepare several 2-dimethylamino indoline compounds with high optical activity through oxidation reaction.

以手性磷酸作为催化剂，由磺酰亚胺和4，7-二氢吲哚化合物可以高效率高对映选择性的合成2-甲氨基(4，7-二氢吲哚)化合物；产物可以经过氧化反应用于制备多种高光学活性的2-甲氨基吲哚化合化合物。

The asymmetric addition of organometallic reagents to prochiral imine in the presence of chiral ligands is attrac...

有机金属试剂在手性配体促进下对潜手性亚胺的对映选择性加成已成为有兴趣的课题之一。

The asymmetric addition of organometallic reagents to prochiral imine in the presence of chiral ligands is attracting inceasing interest.

有机金属试剂在手性配体促进下对潜手性亚胺的对映选择性加成已成为有兴趣的课题之一。

Nsted acid for the activation of the imine and acetic acid (20 mol %) as the non-chiral proton source for the shift of the keto-enol equilibrium.

94%酸、活化的亚胺乙酸(20摩尔%)的非手质子源为转移的酮-烯醇平衡。

In this article, the synthesis of Molecular Imprinting Polymer and the mechanism of chiral separation are discussed.

简要介绍了该技术的合成过程、手性拆分机理及其在手性药物拆分中的应用及优点。

Some chiral diols were also investigated as the ligands, with those derived from indene exhibiting better enantioselectivity.

又考察一些手性二醇配体，其中，茚衍生的配体有着较好的手性诱导性能。

Two new chiral salen-manganese complexes were synthesized and employed in the enantioselective epoxidation of indene in the presence of pyridine N-oxide and ammonium acetate as cocatalysts, respectively.

合成了两个新型的手性salen-manganese配合物，在分别以吡啶氮氧化物和醋酸铵为助催化剂的条件下，运用于催化茚的不对称环氧化反应。

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。