查询词典 intermediates

While the adsorptions of l-propanol and 1-Br-propane at 100 癈 give rise to 1-propoxy species, which mainly converted to propanal at higher temperature. IR spectrum arising from the interaction of propene with the catalyst at 100 癈 shows the IR bands of allyl alcoholate and isopropoxy species. As the temperature was increased to 150 癈, the bands ascribable to the adsorbed acetone and acrolein were observed. Based on these results, it is suggested that isopropoxy species is one of the intermediates for SOP to acrolein over MoPO/SiO2 catalyst.

原位IR光谱实验结果表明：200℃时丙烷／O_2混合气在催化剂表面吸附后的IR谱与同温度下异丙醇吸附的IR谱相似，均检测到吸附态丙酮物种和丙烯醛物种的IR谱峰；溴代异丙烷和异丙醇在催化剂表面吸附后均转化为异丙氧基，异丙氧基主要转化为丙烯和丙酮，丙烯进一步转化为丙烯醛；溴代正丙烷和正丙醇在催化剂表面吸附后均转化为正丙氧基，正丙氧基主要转化为丙醛；丙烯在催化剂表面吸附后转化为σ-氧烯丙基和异丙氧基，升温后σ-氧烯丙基转化为丙烯醛而异丙氧基转化为丙酮。

The main products and business: Pharmaceutical intermediates,Bactericide and Algaecide, Amino acids and derivatives,Polypeptide reagents, Chiral compounds, oxygen absorbers, biochemical reagents and fine chemicals, our products sold in Europe and America, the Middle East and other regions.

主要产品及业务：医药中间体，水处理杀菌剂，氨基酸及衍生物，多肽试剂，手性化合物，脱氧剂，生化试剂和精细化学品，销往欧美，中东等地区。

The processes are first put forward that chloro alkane take partin reaction through free radical intermediates.

通过上述研究的实验结果，首次提出了〓／膦体系在上述溶剂中的自由基反应机理。

In the paper, the research evolvement of electrocarboxylation from carbon dioxide with olefin, alkyne, and ketones in near decades was summarized, these reactions were convenient ways to synthesize some valuable pharmaceutical precursor and intermediates in organic synthesis.

文章综述了近几十年来二氧化碳与烯烃化合物、炔烃化合物以及酮类化合物的电羰基化反应的研究进展，这些反应是合成一些有价值的药物前驱体或是有机合成中间体的简便方法。

Firstly, one of the two key intermediates, tetrahydrofuran fragment with aterminal alkyne 27, was prepared from D-glucose utilizing a multiple-step sequencedeveloped by us earlier.

在本组过去的工作基础上，我们从葡萄糖出发，获得了含有四氢呋喃环的炔化合物27。同时，从木糖及炔丙醇出发，获得了一端为γ内酯环的烯基碘化合物14，即C1-C13片断。

To avoid the influence of ammonolysis, alcoholysis and hydrolysis on molecular structure identification, in this paper, derivational estimation is utilized to confirm molecular structures ofβ-naphthol-containing sulfonyl chloride intermediates. Then the structures of corresponding sulfonamide dyes are also confirmed by FTIR,~1H NMR and mass spectrometry.

为了避免磺酰氯化合物发生水解、醇解和胺解等衍生化反应影响磺酰氯化合物分子结构表征，本文采用衍生化反推法证明了β-萘酚结构磺酰氯化合物的分子结构，并利用红外光谱、核磁共振氢谱、质谱表征了含β-萘酚结构磺酰胺染料的分子结构。

Polyethylene glycol dimethacrylate, one of the fine chemical intermediates is the main ingredient of anaerobe. With the development of adhesives, the domestic production of polyethylene dimethacrylate has been challenged from many aspects, therefore, to improve the production technics and yields has been the key problem to resolve at present.

缩乙二醇双甲基丙烯酸酯——精细化学品中间体之一，作为胶粘剂中厌氧胶的主剂，在胶粘剂日益发展的今天，国内的缩乙二醇双甲基丙烯酸酯生产受到了很多方面的挑战，因此，改进生产工艺，提高产率是目前缩乙二醇双甲基丙烯酸酯生产首要解决的问题。

Part two, Three analogue compounds of actamiprid were synthesized by analogue synthesis method through the intermediates which have insecticide activity.

第二部分中，选取本身具有杀虫活性的基团取代吡虫清中的2-氯-5-氯甲基吡啶，采用"类同合成法"合成了3个烟碱类杀虫剂吡虫清的类似物。

TPS produces and sells pharmaceutical intermediates made from local resources, including L-dopa,Artemisinin ,artesunate, dihydro artemisinin, shikimic acid, mangiferin, camptothecin, star anise oil,ursolic acid , rosmarinic acid, anethole,etc.

产品有：左旋多巴，青蒿素，青蒿琥酯，双氢青蒿素，蒿甲醚，莽草酸，八角茴香油，芒果甙，喜树碱，熊果酸等当地资源生产加工的天然植物提取物。

Our company mainly production and sale of products are: L-dopa, artemisinin, artesunate, dihydroartemisinin, shikimic acid, mangiferin, Solanesol, camptothecin, Star Anise Oil, fans Diego Shannon acid and rosemary essential oils and other local resources for production and processing of pharmaceutical intermediates.

我们公司主要生产及销售的产品有：左旋多巴、青蒿素、青蒿琥酯、双氢青蒿素、莽草酸、芒果甙、茄尼醇、喜树碱、八角茴香油、迷迭香酸和迷迭香精油等当地资源生产加工的医药中间体。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。