中间体

This thesis is constituted by four parts: In the first part a summarization is given on the main total synthetic methods of isoflavones, for example, deoxybenzoin method which generally involves two steps wherein a phenol is reacted in the presence of a Lewis acid with phenylacetic acid to generate an intermediate deoxybenzoin which is then cyclized with a one carbon electrophile.

本论文主要工作包括四部分：第一章综述了近年来全合成异黄酮的主要方法：脱氧安息香法，是以多羟基苯酚与苯乙酸或苯乙腈在Lewis酸存在下，反应生成中间体脱氧安息香，然后再与亲电碳试剂进行关环反应生成异黄酮。

The separation of 1-(2,6-dichlorophenyl)-2 - indolone and related materials in the synthesis of medical intermediate DC I from 2,6-dichlorophenol and phenylamine was investigated with high performanc e liquid chrom atography under different chromatographic conditions.

应用高效液相色谱方法研究了以2，6-二氯苯酚和苯胺为起始原料合成药物中间体1-(2 ，6-二氯苯基)-2-吲哚酮过程中，DCI及相关物质在不同色谱条件下的分离情况。

Sulfonic-4-(β-sulphatoethyl-sulphone) phenylamine is often applied to producing bifunctional-soluble reactive dyes and is an important dye intermediate. It plays an important role in the synthesis of KN style reactive dye M style double reactive dye and modified dissimilar double reactive dye. Used 2-sulfonic-4-(β-sulphatoethyl-sulphone) phenylamine as raw material can improve the uniformly dying performance and scourablility of dyestuff molecules and can improve the firm degree of colour staining.

2-磺酸-4-苯胺是制备水溶性双活性染料的重要中间体，在KN型活性染料、M型双活性染料以及改性异种双活性染料的合成中起着重要的作用，用2-磺酸-4-苯胺作原料合成活性染料可增加染料分子的匀染性和易洗涤性，提高染料的粘色牢度。

Synthesis of Organic Pigmet Intermidiate N, N'- bisacetylaceto - 2 - methyl - 5 - chloro -1,4- Phenylenediamine

有机颜料中间体N，N′-双乙酰乙酰基2-甲基-5-氯代-1，4-苯二胺的合成

The C_(60)-fused tetrahydrofuran derivatives are excellent synthons for further functionalization.While treated with different equiv,of BF_3·OEt_2 at various temperature,several novel functionized fullerene derivatives have been successfully synthesized.2.1,4-Fullerenols C_(60)ArOH were synthesized via the reaction of[60]fullerene with 4-substituted phenylhydrazine hydrochlorides and sodium nitrite under moisture and aerobic conditions.

这种四氢呋喃环合富勒烯衍生物作为一个合成中间体又可发生进一步的衍生化反应，其与不同当量BF_3·OEt_2在不同温度条件下可以得到二氢呋喃环合富勒烯衍生物、三元环合富勒烯衍生物等。2。

Aldol condensation 2, 5-dimethoxymethoxyacetophone with 2, 4, 6 -tri methoxymethoxybenzendehyde, then hydrogenation, reductive, the key intermediate 83 (84) of natural product 3, 5, 7, 2′, 5′- pentahydroxyflavan, was obtained; Mini reviewed EGCg activity, Then gallic acid and phloroglucin were used to synthsis EGCg, The key intermediate Chalcone 109 of EGCg was abtained through 7 steps from gallic acid.

重点介绍了以没食子酸为原料，经酯化，保护，还原，氧化，格氏反应，氧化六步反应得到3，4，5-三苄氧基苯乙酮，以间苯三酚为原料，经维斯迈尔反应，苄基保护，甲氧甲氧基保护三步反应得到2，4-二苄氧基-6甲氧甲氧基苯甲醛，酮106与醛108经羟醛缩合得到EGCg重要反应中间体查尔酮109。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

对黄烷醇化合物的立体选择性全合成进行了探索：以间苯三酚和2，4，6-三羟基苯乙酮为原料，尝试用两条路线对Distenin化合物进行了全合成研究；以对苯二酚为原料，经三步制得2，5-二甲氧甲氧基苯乙酮，与2，4，6-三甲氧甲氧基苯甲醛反应，经四步反应得到天然产物3，5，7，2′，5′-二五羟基黄烷关键中间体1-（2′，6′-二甲氧甲氧基苯）-3-（2&，4&，6-三甲氧甲氧基苯）丙烷-1R，2R-二醇83及其对映体84；简要介绍了EGCg类化合物的生物活性和研究概况。

In the presence of Pt catalyst, polyhydrodimethylsiloxane reacted with allyl polyoxyethylenepolyoxypropylene ether (F-6) by hydrosilylation to form an intermediate polyether silicone, which further undergo phosphation reaction with phosphorous pentoxide, a kind of phosphate modified polyethersiloxane surfactant was prepared.

采用铂作催化剂，通过含氢硅油和端烯基聚醚（F-6）的硅氢化加成反应先制得聚醚硅油中间体，再将其和五氧化二磷进行酯化反应，制得了一种磷酸酯型有机硅表面活性剂。

The phosphine was quickly oxidized by triplet oxygen to phosphineoxide with a free radical chain reaction at relatively low temperature; while at high temperature, the phosphine react with singlet oxygen through a three member ring intermediate to form phosphineoxide and phosphinate as the product.

在相对较低温度时，膦化物与基态氧发生自由基链反应，膦化物很快被氧化为氧化膦；在相对较高的温度，膦化物与激发态氧直接作用，通过三元环状中间体而最终生成氧化膦和次磷酸酯。

The derivatives of phenylsulfonyl phosphonate containingselenomorpholine were synthesized by Michaelis-Becker reaction and N-seleno-morpholinyl alkylphosphonates were formed by Mannich reaction.

研究了中间体硒代吗啉、苯并异硒唑酮及目标化合物的合成条件，利用Michaelis-Becker反应合成了一类硒代吗啉磺酰胺膦酸酯衍生物，利用Mannich反应合成了N-硒代吗啉基烷基膦酸酯衍生物。

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％。