中间体

According to the distributing law of native medicinal plants, Chengzhi Life Science has separately set up the extraction and processing bases for the production of herbal extracts in the North, the Northwest, and the South of China. We have successively developed 30 kinds of TCM extracts and phytochemical ingredients such as the extracts of Cordyceps sinensis, Phyllanthus emblica, Citrus aurantium, Mushroom, and Licorice etc.

根据道地药材的分布规律，我公司分别在中国华北、西北以及华南等地部署了植物次生代谢产物原料中间体生产加工基地，先后开发出了冬虫夏草，余甘子，枳实和灵芝、甘草提取物等30种传统的中间原料产品。

By using this method, a synthetic data matrix for an autocatalytic reaction with two intermediates has been successfully resolved.

应用此方法，一组含有两个中间体的自催化反应的模拟数据得到了成功的解析。

We had to give uP it. We began to synthesize another i ntermedi at6,benzal dehyde.

因此，我们采用了合成另一中间体苯甲醛来替代乙酰丙酮的合成。

The kinetic of hydrolysis of benzal chloride was studied by using a new kind of phase transfer catalyst in this paper.

1前言苯甲醛是一种重要的化工中间体，在医药、香料、农药、染料、树脂等工业中用途甚广。

The asymmetric hydrogenation of prochiral ketones is one of the most efficient methods of producing enantiomerically enriched secondary alcohols. The ruthenium complex RuCl_2[P(C_6H_5)_3]_2--DPEN(DPEN=1, 2-diphenylethylene-diamine) was applied to the asymmetric hydrogenation of benzalacetone.

具有光学活性的烯丙基醇是合成许多生理活性药物的重要中间体，前手性酮不对称加氢反应是制备具有光学活性仲醇的一种重要方法。

The mechanism of carbon-nitrogen coupling reaction of 2-Iodo-selenophene with benzamide catalyzed by CuI has been investigated with density functional theory at GGA/PW91/DND level. The geometric configurations of reactants, intermediates, transition states, and products were optimized and verified by means of vibration frequency calculations.

采用密度泛函理论方法，在GGA/PW91/DND基组与水平上研究了2-碘代硒苯与苯甲酰胺在CuI催化下的微观反应机理，优化了反应过程中的反应物、中间体、过渡态和产物。

This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.

论文的主要内容如下：1、简要介绍本论文工作的研究背景，并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物，利用紫外光谱和气相色谱确定了此类化合物较佳光照时间，测定了一个具有代表性光解产物的单晶结构，提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物，测定了两个具有代表性化合物的单晶结构。

From the ester n, the intermediate Ⅲwas produced by the Sonogashira coupling reaction with terminal alkynes under the co-catalysts of Pd2 and Cul. These final products of alkynyl benzamide derivatives IV were obtained by the cleavage of support with primary or second amines.

液相合成兼容了固相合成可快速简便地对产物进行分离纯化以及溶液相合成可在均相条件下进行反应和用常规手段对反应中间体进行分析检测的优点，用聚乙二醇4000作为可溶性聚合物支持体，通过醚键将[1，3，5]氯三嗪连接在PEG上制备成PEG支持的新型的可溶性聚合物试剂I。

For example, benzidine and β-naphthalene amine, actually though its importance for the syntheses of dyes, especially azo dyes, have been banned for the sake of their strong carcinogenic activities to cause professional bladder cancer.

例如，联苯胺和β-萘胺曾经是非常重要的染料中间体，它们能导致职业性膀胱癌而被禁用，因此非诱变性芳胺的研究，特别是联苯胺和β-萘胺的代用研究，已经引起染料学科的广泛关注。

Benzotriazole is an important organic synthesis intermediates,it is mainly used in the field of water stabilizers, preservatives, optical stabilizers and so on.

苯并三氮唑是一类重要的有机合成中间体，主要应用于水质稳定剂，防腐剂，光稳定剂等领域中。

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％。