化学合成

Abstract］ Objective To study the synthesis and antibiosis activity of the complex La with chlorogenic acid.

目的 研究金属镧与绿原酸配合物的合成及抗菌活性。方法通过元素分析、红外光谱、热重分析和化学分析，确定配合物的组成为［La（C16H17O9）3］·2H2O。

The C〓-symmetric chiral bisoxazoline derivatives have recently been employed as ligands in a wide variety of metal-catalyzed asymmetric reactions.

在最近十几年中，具有C〓对称性的手性双噁唑啉作为配体被广泛应用于各种金属催化的不对称合成反应，并获得了良好的立体选择性，在某些反应过程中已表现出近似化学酶的功能。

Autotroph:an organism capable of synthesizing its own food from inorganic substances, using light or chemical energy.

自养生物：一种能够从无机物质如光或化学能量中合成出自身食物的有机体。

The manufacturer can .affect the properties of the fabric by modifying yam count, yam form and weight, weave patterns, batt distribution and fineness, chemical treatments, overall synthetic content, and other manufacturing processes where applicable.

影响毛布性能，修改山药的数量，山药的形式和重量，编织方式，巴特分布和细度，化学处理，整体合成的含量，和其他的可用的制造工艺。

In order to resolve these questions, we try to find some new protecting group which could be used in the preparation of such unstable nucleotides analogues.

对于一些寡核苷酸的类似物，由于它们在某些化学环境下的不稳定性而使它们的合成具有一定的困难，为了解决这些问题，人们一直在开发新的保护基，以消除这些副反应的影响，更方便地制备这些化合物。

Such a method can replace traditional reaction with phosgene as the carbonylation reagent, involving the toxic reagent and drastic reaction conditions, the new herein studied method is environmentally benignancy and has atom economical selectivity.

它可代替以往的利用光气来给化合物引进一个羰基的方法，具有原子经济反应的高选择性和对环境的友好性，从而越来越受到人们的关注，已成为C〓化学中羰基合成领域的一个重要的研究热点。

The development and application of supramolecular chemistry and NMR were reviewed.Based on that,several benzimidazole derivatives were synthesized from o-phenylenediamine.

本文在总结超分子化学及核磁共振的发展及应用的基础上，以邻苯二胺为原料，合成了几种苯并咪唑衍生物，作为分子识别中的客体小分子。

Berthelot, the great French founder of modern synthetic chemistry, once stated in a letter to a close friend that the final experiments which led to his most wonderful discoveries had never been the result of carefully followed and reasoned trains of thought, but that, on the contrary,"they came of themselves, so to speak, from the clear sky."

法国现代合成化学研究的奠基人 Berthelot 曾在给密友的一封信中谈到，关于他的伟大发现的最终的验证试验其实并不是经过详细思考、仔细研究得来的结果，反而是这些试验自己来找他，就象从天而降一般。

The microwave absorption of some organic solvents and binary system solutions was studied at 9590 MHz and room temperature.

古口1弓目前，越来越多的人开始关注微波在化学领域中的应用，特别是在有机合成中的应用'j。

In recent years, studies on limonoids have focused on the chemical structures, biosynthesis and biological activities.

这类化合物具有明显抗癌和抗菌等生物活性，近年来的研究集中在其化学结构、生物合成和生物活性等方面。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失