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The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我们以蒈醛酸内酯为起始原料，经过氧化反应、酰氯化反应得到顺式环丙烷二酰氯，然后在二环己基碳二亚胺的催化下与相应的氨基醇反应合成了顺式二羟基酰胺，再用对甲苯磺酰氯将羟基活化，最后在二甲氨基吡啶的催化下关环合成顺式双噁唑啉配体L1～L4。

One of the few routes to Lemberg is via Warsaw, where your diarist nearly misses his connection because of a huge queue at an inadequate transit point.

几条通往Lemberg的路之一是要进过Warsaw，在这里记者差点由于要在严重不足的中转站点排很长的队而失去联络。

The process conditions of separation and purification via diatom earth filtration and alcohol precipitation were studied .

其中，醇析法是分离提纯黄原胶最简捷的方法，包括预处理及醇析两个工序。

Then 2′bromo-2-dimethylamino-1,1′-binaphthyl was obtained via diazotization,bromination and methylation in 49.7% yield.

首先，它是在有机化学和无机化学的相互渗透中发展起来的，此外，它还和一些相关学科具有密切联系。

The hapten was conjugated to BSA via amino diazotization linkage.

半抗原衍生物再通过重氮化反应与BSA偶联。

In addition,the evolution of flow field in the dichloromethane phase near the interface was observed and analyzed via the visualization system.

观察并分析了油相近界面流体流型随时间、空间的渐变过程。

Via the stepwise discrimnant analysis, crown dieback is found to be the most important variable. If one wants to keep the hit rat over 90%, one can use 6 original observed variables.

使用逐步鉴别分析，发现树冠梢枯为最重要的变数，而将调查变数缩减为6个仍保有90%以上的击中率。

It was capable to achieve feasible dielectric constant via introduce of impurities and meet demand.

通过引入适当的添加剂，可以获得介电常数可调的，满足实际需要的微波介质陶瓷。

Based on the theorem, one can design a GS driven ADE via a driving chaotic ADE and a C^1 diffeomorphism.

基于该定理，利用驱动系统的混沌ADE和同胚映射，可设计具有GS性质的响应ADE。

Sales, in turn, is related to advertising expenditures via a differential or difference equation termed a state equation.I...

本文仅介绍其中两类最重要的广告动态最优控制模型，并在此基础上对所介绍的模型进行评析，同时指出进一步研究的方向。

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！