中间体

Quantum chemical and molecular mechanical methods were employed to study the acylation in the acetylthiocholine hydrolysis catalyzed by acetylcholinesterase.

应用量子化学和分子力学方法研究乙酰胆碱酯酶催化硫代乙酰胆碱水解反应中的乙酰化反应，计算了反应物、过渡态、产物及中间体的几何结构及电子结构。

Such a process is particularly useful in the production of difunctional monomers and intermediates in the synthesis of adipic acid.

这样一种方法对于制备双官能单体和合成己二酸的中间体特别有用。

Adipic acid is a most important organic synthetic intermediate, and much attention has been paid for its green synthesis process because of disadvantages in current technology.

己二酸是一种非常重要的有机合成中间体，由于传统生产工艺的局限性，其绿色合成方法备受研究者的关注。

4R,5S,6R-5,6-Bis-allyl-6-aldehyde-γ-hexanelactone I-145 was prepared from D-arabinose by six steps. Compound I-145 underwent Mukaiyama-type intramolecular aldolization to produce bicyclooctane I-147 stereospecifically.

我们以D-阿拉伯糖为起始原料，经六步反应，得到(4R，5S，6R)-5， 6-二烯丙氧基-6-醛基-γ-己酸内酯I-145，然后I-145发生分子内的Mukaiyama式aldol缩合反应，完全立体专一性地得到环化中间体I-147。

The influence of end alkoxy group, configuration and complexation of the compound on the liquid crystalline behavior has been invested.

中间体、配体和配合物的化学结构经元素分析、IR、UV-vis、~1H NMR、荧光和原子吸收等方法确证。

The asymmetric allylation of aldehydes is one of the most important methods for preparation of chiral homoallylic alcohol, which is the building block in organic synthesis of fine chemistry and drugs.

手性烯丙基醇是一类重要医药中间体，合成手性烯丙基醇的常见方法是醛的不对称烯丙基化反应。

Production of dye intermediates oxidation products have Anthraquinone, refined anthracene, carbazole, 1 - aminoanthraquinone refined benzene around anthrone, anthrone-bromo-benzene series around.

企业生产的染料中间体系列产品有氧化蒽醌、精蒽、咔唑、1--氨基蒽醌、精制苯绕蒽酮、溴代苯绕蒽酮系列等。

Synthesized three new dithiocarbohydrazones: 1, 5-bis (4-methoxybenzaldehyde) dithiocarbohydrazone (1), 1, 5-bis (p-dimethyl aminobenzaldehyde) dithiocarbohydrazone (2), 1, 5-bis (2-furaldehyde) dithiocarbohydrazone (3), and initially reported the 〓C NMR data of the dithiocarbohydrazones.

合成了3—（谷氨酮—1—基）—4—氨基—5—巯基—1，2，4—均三唑新的中间体化合物，以元素分析，IR，NMR，MS实验技术对其结构进行了表征，研究其NMR波谱特征，并以〓H-〓H COSY，〓C-〓H COSY，COLOC二维NMR技术对其〓H，〓C NMR的谱峰进行了全归属。

A new nonaqueous titration method for the determination of aminocaproic acid and aminocaproic acid hydrochloride was established, for technology-controlling of nylon 6 waste recycling by HCl de-polymerization.

本文针对盐酸酸解尼龙-6废弃物回收6-氨基己酸单体的工艺控制问题，首次建立了非水滴定法测定中间体6-氨基己酸盐酸盐及终产品6-氨基己酸含量的分析方法。

Jiangsu Anpon Electrical Chemistry Co., Ltd., Huaian 223002, Jiangsu, China Abstract: 2-Amino-4,6-dimethoxy-1,3,5-triazine, an important intermediate for preparing cinosulfuron, was synthesized utilizing 2,4,6-trichloro-1,3,5-triazine as raw material via ammonization, methoxylation. The purity was 96.0% and the average yield was 90.4%.

江苏安邦电化有限公司，江苏淮安 223002 摘要：2-氨基-4，6-二甲氧基-1，3，5-三嗪是合成醚磺隆的重要中间体，以三聚氯氰为起始原料，经氨化、甲氧基化中试反应得到2-氨基-4，6-二甲氧基-1，3，5-三嗪，纯度为96.0%，平均收率90.4%。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。