对映的

Separation of racemic mixtures of thirty-eight secondary aromatic alcohols and arylethanediols with different substituting group was achieved with HPLC by using Chiralcel OD and Chiralcel LJ as chiral stationary phase and hexane/2-propanol mixtures of different ratios as eluents. The chromatographic parameters of these racemates on OD and OJ columns were examined.

在ChiralcelOD和ChiralcelOJ两支多糖类手性固定相上，以各种不同配比的正己烷-异丙醇为洗脱剂对38种带有不同取代基的芳香仲醇及芳香乙二醇类手性化合物的对映体进行拆分，考察了这些外消旋体在这两支手性柱上的色谱行为。

During the research, one of the best stereoselective results was achieved in Streckerreactions on the aliphatic imines and the possible mechanism was proposed.

在研究过程中，我们发现在CsF促进下TMSCN能够对有α-氢的亚磺酰基亚胺进行高非对映选择性的加成反应并取得迄今为止脂肪族亚胺的Strecker反应的最好结果。

The effect of structural variation of the solutes on their separation and retention was noted.

此外，还建立了手性农药喹禾灵和重要药物前体DL-苯丁氨酸乙酯对映体纯度的测定方法。

Synthesis of such compounds from nonchiral materials results in equal numbers of the enantiomers, racemates.

使用非手性物料合成此类化合物导致等量的对映异构体和外消旋物。

In our study, the synthesis of spice and the resolution of racemates menthol,(R, 5-4-hydroxy-3-methyl-2-(2-propenyl)-2-cyclopenten-1-one (R, S-HMPC were achieved in ionic liquids by three lipase that are usually used in biocatalysis. Meanwhile, some problems associated with enzyme catalysis in ionic liquids were also addressed.

本论文以三种常用于生物催化的脂肪酶作催化用酶，在&绿色&反应介质—离子液体中实现了香料的合成和手性对映体的拆分，同时也对酶在离子液体中催化所存在的问题进行了一些探讨。

Direct enantiomeric separation of racemic mixtures of 13 β-amino alcohols and β-hydroxy sulfides was achieved by HPLC using Chiralcel OD, Chiralcel OJ and Chiralpak AD as chiral stationary phases and hexane/2-propanol mixture as eluent. These racemates were completely separated into enantiomers at least on one of these stationary phases.

在以正己烷-异丙醇为移动相的体系中，用ChiralcelOD，ChiralcelOJ及ChiralpakAD作为手性固定相对13种β-氨基醇及β-羟基硫醚类化合物对映体进行HPLC手性拆分，这些化合物至少能在一支柱上得到基线级分离。

As a national investment in major projects, the Audit Commission on the Power Station Yingxiuwan tracking the whole process of post-disaster reconstruction audit.

作为国家投资的重大项目，审计署对映秀湾电站灾后重建全过程跟踪审计。

In this paper, we continue the study of constructing distance-increasing mappings from binary vectors to permutations.

本论文中，我们持续探讨如何建构从二元向量到排列的对映。

First, there are not an accurate density and specific rotation and relative e.e. value of 2-chloropropionic acid. No one has proved that 2-chloropropionic acid can be directly separated by using chiral stationary phase.

首先，由于现有文献和试剂手册中对2-氯丙酸的旋光和光学纯度的对映关系没有一个明确的标准，而且也未有任何研究证明2-氯丙酸可以在现有的一些常用手性固定相上进行直接拆分。

A conversion of 68% and an e.e. of 99% of epoxide were obtained when α-methylstyrene was oxidized by NaClO for 24 h at 0 ℃ in the presence of 4-PPNO.

在NaClO/PPNO氧化剂体系中0℃反应24h，α-甲基苯乙烯环氧化反应的转化率达68%，对映选择性e.e。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！