查询词典 intermediates

The nature of adsorbed intermediates detected by IR are:a π-allylic intermediate;an enolic type compound formed in the presence of Bronsted acid sites;a π-boned propylene species interacting with Lewis acid sites.

nsted酸位作用形成的烯丙醇物种；异丙醇中间物种。

Results of the product analyses indicated that most of dye molecules could be facultatively broken down into simple intermediates, which would be further degraded under subsequent aerobic condition.

产物分析结果表明：80.5%的母体染料大分子能在兼氧条件下降解成较为简单的中间产物，并且这些中间产物能在好氧条件下进一步矿化。

The step and roughened surface promotes simultaneously the methanol oxidation via adsorbed CO and dissolved intermediates, therefore for different pure Pt electrodes, though different faradaic current, the current efficiency for CO〓 formation is approximately same.

台阶位置和粗化表面同时促进了甲醇氧化的两个路径，因此，对于不同的纯Pt电极，尽管甲醇氧化电流不同，CO〓的电流效率接近相同。

Keywords fluorobenzene;ozone oxidation;intermediates;kinetics

氟苯； 臭氧氧化；中间产物；动力学

With intermediates 1,ω-hexadecanediol and ω-bromo pentadecanol as starting materials,ω-bromo hexadecanoic acid and ω-bromo octadecanoic acid were prepared in four and seven steps of reactions separately.

分别以1，ω-十五烷二酸和1，ω-十六烷二酸为原料，各经过四步有机反应，制备了ω-碘代十六烷酸及含十四、十五、十六碳原子的ω-溴代直链脂肪酸；再以中间产物15-溴代十五烷醇、1，ω-十六烷二醇为原料，各经过四步、七步有机反应，制备了ω-溴代十六烷酸及ω-溴代十八烷酸。

Homochiral cyanohydrins are of synthetic interest as they may be elaborated into a number of key multifunctional intermediates.

氰醇是合成一些多官能基化合物的重要中间体。

These compounds are of substantial interest both inviewpoints of theory and practical applications, mainlyunder the stimulus to achieve synthetic models either foractive sites of iron-sulfur proteins or for transitionmetal catalysts. This thesis describes the synthesis, structures andconformations of 51 new iron-sulfur cluster complexes,which have been characterized by elemental analysis andstandard spectroscopic methods. In addition, single-crystalX-ray diffraction analyses were performed for 4 representa-tive new compounds. Reactivities of μ-〓 with mono- and di- Grig-nard reagents derived intermediates toward various organicelectrophilic substrates were studied, along with complexa-tion of arynyl-containing iron-sulfur clusters by 〓Thus, several bridged, non-bridged, monomeric, dimeric,homonuclear, heteronuclear iron-sullfur and iron-sulfur co-balt-carbon cluster complexes were synthesized. A novelreaction and convenient route for the synthesis in highyield of tetranuclear iron complexes 〓 containing atetracoordinated sulfur atom was discovered, whereas aplausible mechanism based on experimental results was propo-sed for the formation of the new cluster type.

鉴于有机铁硫原子簇化学在基础理论发展和应用方面的重要意义，因此我们开展了这一课题的研究，并取得以下主要成果： 1、本文共合成了51个新有机铁硫及含钴碳簇基的有机铁硫原子簇配合物，除用元素分析，NMR，IR，MS法表征其结构和构象外，还用X-光衍射技术测得四个代表性配合物的单晶结构和构象； 2、我们业已发现炔基Grignard试剂同〓可形成一种&开环&与&闭环&中间物的平衡混合物，研究该平衡混合物同各种亲电试剂的反应； 3、研究发现了一种可高产率地形成〓含〓四配位硫挛合簇的新化学反应并对此反应提出了—种有趣的反应机理； 4、首次由1，4-二溴丁烷双Grignard试剂与〓制得一种新型铁硫簇双硫阴离子活性中间体，并进而研究了它的亲核反应性能； 5、找到了通过〓的光化学反应来合成簇合物〓-〓的一条有实用价值的新路线。

We produce a reliable product quality and reasonable price, and customers have been recognized and well-led products; artemisinin, galanthamine hydrobromide, Uncaria alkaloids, such as pharmaceutical intermediates, in line with the new concept of modern green .

我们生产的产品质量可靠，价格合理，且得到了广大用户的肯定和好评，主导产品；青蒿素、氢溴酸加兰他敏、钩藤总碱等医药中间体，符合现代绿色环保新理念。

These results provided the evidence that the formation of imino acetoxyphosphoranes intermediates was crucial to bioorganic reactions of N-phosphoamino acids.

这些结果从机理上证明N-磷酰氨基酸在水／醇体系中所发生的仿生化反应的确经历了氨基酸磷烷中间体。

Intertrade Exim - Competitive sourcing of pharmaceutical bulk drugs and intermediates, chemicals and agrochemicals from India and China .

Intertrade进出口-竞争性采购的药品原料药和中间体，化学品和农药来自印度和中国。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。