苯环

The inhibitory performance of triphenyl phospite in naphenic acid to the corrosion of A3 steel was investigated by the mass loss method.

采用静态挂片和SEM方法，考察了亚磷酸三苯酯在环烷酸腐蚀体系中对A3钢的缓蚀性能。

The adsorbent could efficiently adsorb a vatiety of organic dyes belonging to the triphenylmethane, heteropolyeyclic and azodye groups were used as model compounds.

研究了粉状磺化煤加到Fe3O4结构中制备磁性磺化煤，这种吸附剂能够有效地吸附许多有机化合物，用含三苯甲烷、杂多环和偶氮基等水溶性有机染料进行测定。

The results showed that there were 8 kinds of aliphatic, 5 kinds of esters, 2 kinds of aldehydes, 2 kinds of nitrogen sulfur heterocyclic rings and one kind of hydrocarbon, alcoholics, ketone, lactones respectively in the analyzed 21 kinds of aroma components, and the content of furfural,β-methyl valeric acid, palmitic acid, nicotine, neohytadiene were higher, next were acetyl ethyl propionate, caleric acid, phenyl ethyl acetate, hydroxylic diethyl succinate.

结果表明，在分析出的21种香气成分中，分别有脂肪酸类8种，酯类5种，醛类2种，氮硫杂环类2种，烃类、醇类、酮类、内酯类各l种，其中相对含量较高的物质成分是糠醛、β-甲基戊酸、十六碳酸、烟碱、新植二烯，其次是乙酰丙酸乙酯、异戊酸、苯乙酸乙酯、羟基丁二酸二乙酯等。

Commercially available 2 nitro 4 methoxyaniline was used as starting material and converted via reduction with zinc dust and cyclization with potassium ethyl xanthate into the title compound,suggesting that this procedure is suitable for industrial production.

以4 甲氧基 2 硝基苯胺为原料，经锌粉还原后，再与乙基黄原酸钾环缩合制得2 巯基 5 甲氧基 1H 苯并咪唑。结果收率80%。结论该方法简单易行，适合工业化生产。

Under laboratory conditions, this paper studied the adsorption of different concentration 40, 400 and 4 000 μgL^(-1 polycyclic aromatic hydrocarbons including low molecular weight acenaphthylene, phenathrene and chrysene and high molecular weight benzo perylene in seawater by the leaf litters of Kandelia candel and Avicennia marina at different decomposition status.

在实验室条件下，研究了海水中多环芳烃（含低分子量PAHs苊、菲和以及高分子量PAHs苯并芘）浓度分别为40、400和4000μgL^(-1)时，红树植物秋茄和白骨壤不同分解状态落叶碎屑对PAHs的吸附作用。

METHODS: Based on the antitumor activity and structural feature of 8-chloroadenosine and retinoic acid, modifications were made at positions 5′ and 8,substituted cinnamoyl and benzoyl groups were bound at 8 position through amido and ester bonds, sulfonation and nitrosation at 5′-OH and its direct chlorination were conducted.

对腺苷的8位和8-Cl-腺苷的糖环羟基进行了结构改造，以酰胺键和酯键在腺苷的8位连接了具共轭基团的肉桂酰基和苯甲酰基，得到腺苷的维甲类似物；对8-Cl-腺苷的5′-羟基进行了甲磺酰化，硝基化以及氯代反应，得到了它的衍生物。

Aniline compounds are used as raw material and reacted with anthranilic acid and then phenyl iodide as alkylating agents to give alkylating products followed by cyclizing with concentrated sulphuric acid to give a N-phenyl-acridone(or 3-ethoxyl-N-phenylacridone).The structure of intermediate and target compound are determined by IR and MS.

以苯胺类化合物为原料，先后以邻氯苯甲酸和碘苯为烷基化试剂进行了N 烷基化反应，再用浓硫酸使其环化制得N-苯基吖啶酮和3-乙氧基-N-苯基吖啶酮，并用红外光谱及质谱仪检测了各中间体及目标产物的结构。

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分，我们研究了α，α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应，发现全氟苄基碘或溴及α，α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐；全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴；在烯烃存在下，全氟苄基碘则与烯烃发生加成反应，生成相应的1：1加成产物；在三价醋酸锰的作用下，部分芳香化合物如茴香醚，二甲氧基苯，吡啶，喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应，反应表现出一定的区域选择性，产率良好。

Moisturizer:Water,propylene glycol,saccharide isomerate,chondrus crispus,peg-40 hydrogenated castor oil,imidazolidinyl urea,methylparaben,sodium hyaluronate,pentadecalactone,citrus aurantium dulcisoil,lactic acid,iris germanica root extract,sodium hydroxide,citrus aurantium amara oil,yellow 6(CI 15985),limonene,linalool

保湿精华：水，丙二醇，天然异构寡糖，卡拉胶，PEG-40氢化蓖麻油，尿素醛，羟苯甲酯，透明质酸钠，环十五内酯，甜橙油，乳酸，鸢尾花根萃取，氢氧化钠，苦橙油，黄 6(CI 15985)，柠檬精油，芳樟醇

A compound 2-(3-hydroxyphenyl)[60] fullerene pyrrolidine was synthesized by the 1,3-dipolar cycloaddition reaction of the fullerene(C60) and azomethine ylide (prepared from glycine and 3-hydroxybenzaldehyde). The product was characterized by UV-Vis,1H-NMR ,FT-IR and MS. The reaction conditions affecting the yields of product were investigated and the optimum reaction conditions with product yield 75%(based on consumed C60) were:molar ratio of C60∶3-hydroxybenzaldehyde:glycine 1∶3∶6,reaction temperature 95℃,reaction time 18h.

利用甘氨酸和3-羟基苯甲醛与C60发生1， 3-偶极环加成反应，合成分离得到了2-(3-羟基苯基)[60]富勒烯吡咯烷，用UV-Vis、1H-NMR、FT-IR、MS等测试手段表征了产物的结构，并通过单因素方法，探讨了反应条件对产物产率的影响，得到最佳工艺条件：反应物摩尔比1∶3∶6，温度95 ℃，反应时间18 h，产物的产率可达75%（以消耗的C60计）。

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。