苯环

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 novel methods for the synthesis of Camptothecin intermediates were described as Friedlandle. Second, we synthsized the key compound—BI, and then made some improvements and innovations of the methods from the reference. The method of using more economically phenylaldehyde derivatives and phenylamine derivatives instead of o-aminobenzaldhyde was worked out.

然后成功合成重要的中间体BI，并且在参考原始文献的基础上作出了改进和创新，使用更便宜的苯甲醛衍生物和苯胺衍生物代替了邻氨基苯甲醛，合成了一系列未关B环的喜树碱中间体衍生物，并获得成功。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′，2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼为原料，合成了化合物5-(1′S)-1′，2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2)；再用化合物(2)与N-取代苯基马来酰亚胺反应，利用无金属氧化剂—IBD引发1，3-偶极反应，发生分子间的环加成，合成了9种新型手性吡唑连二氧代吡咯啉并

Especially , the rearrangement reaction of converting styrene oxide to phenylacetyldehyde were investigated. In this paper, we also studied the method of preparing SO42-/TiO2 by vitriolic titanium boiling regurgitant hydrolyzation and applications of SO42-/TiO2 in the preparation of iso-amyl acetate.

对环氧苯乙烷经分子重排反应制备苯乙醛进行了深入研究；本论文还用硫酸钛沸腾回流水解法制备了纳米SO_4~(2-)/TiO_2固体超强酸粉末，并应用于冰乙酸与异戊醇酯化合成乙酸异戊酯的反应。

Three types of dyes derived from crown ether benzotellurazole (including telluracarbocyanine, polymethine styryl dye and merocyanine dye) are formed by the methods analogous to non-crown ether dyes.

本文系统研究了冠醚苯并碲唑的各种合成方法，探讨了杂环的季铵化反应，并进一步制备了对称冠醚碲碳菁及冠醚苯并碲唑衍生的多甲川苯乙烯菁、部花青染料。

The logarithm difference values of partition coefficients of the compounds in butyl ether/water and in cyclohexane/water system were used for the measurement of the Lewis acidity, while the logarithm difference values of partition coefficients in trichloromethane/water and in tetrachloromethane/water system were used for the measurement of the Lewis basicity, and they were used successfully to differentiate the relative strength of Lewis acidity and basicity for 59 benzene and its derivates.

以化合物在正丁醚/水和环己烷/水溶剂体系中分配系数的对数差作为酸性指数，以其在氯仿/水和四氯化碳/水溶剂体系分配系数的对数差作为碱性指数，提出了一种新的度量有机物Lewis酸碱性的方法，按此方法成功地区分了59种苯系物Lewis酸碱性的相对强弱；并成功地将上述酸碱性指数引入定量结构—性质/活性相关研究之中，探讨了苯系物的正辛醇/水分配系数、水溶解度和土壤有机碳吸附系数等常见理化性质与其Lewis酸碱性间的相关性并建立了相应的定量模型，发现它们之间存在良好的相关性。

The pyrrole, oxazoles, pyridinones, quinolines, dibenzodiazepines, tetrahydrobenzoxazines and tetronic acids have been prepared from enaminones.

吡咯、唑烷、嘧啶酮、喹啉、二苯并二氮杂环类、四氢苯并噁嗪酮和特窗酸等都可以由烯胺酮类化合物制得。

With regard to the current society, much hubbub in the European Union ban on the use of four kinds of children's toys, plasticizers, Jiangnan University, and Dr. LG Chemical in two epoxy esters, briefed the meeting on high molecular weight plasticizers, citrate butyl ester, such as trimellitic several environment-friendly non-toxic plasticizer that can be replaced ethylhexyl phthalate, ethylhexyl adipate, whether it is synthetic process, the source of raw materials are not a problem, but there are differences in price, but into the large-scale production, the price will be decreased substantially.

关于目前社会上闹得沸沸扬扬的欧盟禁止在儿童玩具中使用四种增塑剂，江南大学和LG化学的两位博士在会上介绍了环氧酯类高相对分子质量增塑剂、柠檬酸三丁酯、偏苯三酸酯等几种无毒环保型增塑剂，认为完全可以取代邻苯二甲酸乙基己酯、己二酸乙基己酯，无论是合成工艺、原料来源都不成问题，只是在价格上还有些差异，但进人大规模生产后，价格会有较大幅度下降。

1H NMR spectra of benzene, cyclohexane and n -hexane and 2H NMR spectra of benzene -d6 absorbed on four charcoals with different pore structures were measured at various temperatures in the range from 297 to 195 K.

本文观察了吸附在四种孔结构活性炭中苯，环已烷和正已烷的~1H NMR和笊代苯的~2H NMR谱线在297～195 κ温度范围内的变化。

Synthesis and structural characterization of novel cycioplatinated complexes with 2-aryl imidazolines 2-arylimidazoline ligands 2a-2d were synthesized from benzoyl chloride or p-methoxybenzoyl chloride with aminoethanol or valinol and 2e was synthesized from 2-phenylimidazoline.

新型2-芳基咪唑啉环铂化合物的合成与结构表征以苯甲酰氯或4-甲氧基苯甲酰氯和氨基醇(2-氨基乙醇或外消旋的缬氨基醇)为原料，合成了四种2-芳基咪唑啉配体2a-2d，以2-苯基咪唑啉为原料合成了配体2e，其中2d为新化合物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。