芳基的

The enantioselective reduction of aromatic ketones was investigated by using celeriac chips as biocatalysts under mild and environmentally benign conditions, which afforded corresponding optically active-1-aryl alcohols. The enantioselectivity of products was in accordance with the Prelog's rule.

研究了用芹菜茎薄片在温和与环境友好的条件下催化芳香酮的对映选择性还原反应，制备得到具有光学活性的-1-芳基醇，产物的对映选择性符合Prelog规则。

Wherein X is an oxygen atom or a sulfur atom; C*, C** and C*** are asymmetric carbons; R 1 , R 2 , R 4 , R 5 , R 8 , R 9 and R 10 are each a lower alkyl group optionally having substituent and the like, or R 4 and R 5 and the like in combination optionally form a homocyclic ring optionally having substituent and the like; R 3 is an aryl group optionally having substituent and the like; R 6 and R 7 are each a hydrogen atom and the like; Nu is -CR 16 (COR 17 )(COR 18 ) wherein R 16 , R 17 and R 18 are each a lower alkyl group optionally having substituent and the like, and the like; and EWG is an electron withdrawing group.

通式中，X代表氧或硫；C *、C **和C ***分别表示不对称碳；R 1 、R 2 、R 4 、R 5 、R 8 、R 9 和R 10 分别代表任选取代的低级烷基等，条件是例如R 4 和R 5 可以相互结合形成任选取代的同素环等；R 3 代表任选取代的芳基等；R 6 和R 7 分别代表氢原子等；Nu表示-CR 16 (COR 17 )(COR 18 )(其中R 16 、R 17 和R 18 分别代表任选取代的低级烷基等)等；并且EWG表示吸电子基团。

The microwave-assisted reactions could be finished within several minutes to give high conversion and selectivity.Substrates whose aryl groups were substituted phenyl or naphthyl groups were more suitable in this reaction.

以TfOH为催化剂，在优化的反应条件下，大部分反应都可在数分钟内完成，该反应对于芳基是取代苯环或萘环的的底物效果较好，能得到较高的原料转化率和产物选择性。

This could be a fascinating method for the practical syntheses of chiral synthons as valuable building blocks and important medicinal intermediates.3.Series of novel optical pureγ-aryl-1H-1,2,4-triazole derivatives were designed and synthesized by using the chiral auxiliary(Oppolzer\'s sultam),and all these target compounds were structurally characterized by ~1H NMR,~(13)C NMR,MS and elemental analysis,at the same time,some representative compounds have been elucidated by X-ray diffraction analysis.

应用手性辅剂樟脑磺内酰胺的手性诱导作用，设计合成了一系列光学纯的γ-芳基-1H-1，2，4-三唑类衍生物，所有目标化合物都采用了~1H NMR、~(13)C NMR、MS和元素分析进行了结构表征，同时也获得了部分代表性化合物的晶体结构，进一步确证了化合物的结构。

The shape and size of the cluster can be adjusted.πconjugate aryl alkynyl thio ethers containing thiomethyl in the end are important compounds. We can use such compounds to get some functional molecules that have good assemblied effect, especially in controlling the shape and the size of the cluster.

设计并合成一些形态多样的π共轭系多-SCH_3功能基的芳炔硫醚类分子对获得一些具有良好组装效果，尤其是能够控制团簇形态或控制团簇尺度有用的功能分子有着重要的理论和实际意义。

Besides, n-butyl and sec-butyl tosylate that are difficult for oxidative addition can react with phenylmagnesium bromide to form corresponding cross-coupling products. Primary alkyl halide which contains β-hydrogen and is relatively hard to undergo the reaction , n-butyl chloride for instance, can react with aryl Grignard reagents in the presence of NiB alloy as well.

此外，难以进行氧化加成的对甲苯磺酸正丁酯和对甲苯磺酸仲丁酯可以与苯基溴化镁作用生成相应的交叉偶联产物；反应相对困难的含β-H的伯卤烷，如：正氯丁烷也可以在NiB催化下与芳基格氏试剂发生偶联。

The industrialized situation, problems and solving ways of heavy alkylbenzene sulfonate and petroleum sulfonate were mainly, such introduced, and the research developments and industrialized prospect of arylalkyl sulfonate, alkylated diphenyl ether sulfonate and fatty alcohol ether sulfonate were discussed at the same time.

介绍了重烷基苯磺酸盐和石油磺酸盐工业化生产的现状、存在的问题以及解决的途径，并探讨了芳基烷基磺酸盐、烷基二苯醚磺酸盐和脂肪醇醚磺酸盐的研究现状与工业化前景。

A plausible process of this reaction is as following: Aldehyde was in equilibrium with the enol form, aldehyde reacted with aniline catalyzed by 2,2,2-trichloroacetic acid to afford imine, the generated imine immediately reacted with enol to form intermediate via intramolecular cyclization.

我们发现一分子芳基叠氮和一分子三苯基磷反应生成一分子磷亚胺，后者与由两分子取代的苯氧乙酰氯原位生成的烯酮反应生成4-亚烷基-β-烷基-内酰胺，其串联过程涉及烯酮亚胺的形成及其与烯酮的[2+2]的环加成反应。

But, at present, the production of a soil displacement agent from heavy alkylbenzene sulfonate and petroleum sulfonate as oil displacement agent, there were still some problems as the instable quality, produce scale. It is necessary to develop a feasible production process of arylalkyl sulfonate, alkylated diphenyl ether sulfonate and fatty alcohol ether sulfonate as they can be used as oil displacement assistant in some special oil reservoir. In which Because their abundant raw material, big changeability of structure, high electrolyte tolerance, especial strong calcium tolerance, fatty alcohol ether sulfonate has huge industrialized value.

指出重烷基苯磺酸盐和石油磺酸盐作为三次采油的主表面活性剂，目前在工业化生产中仍存在一些问题，产品质量不太稳定，需进一步改进生产工艺技术，提高产品质量，扩大生产规模；芳基烷基磺酸盐和烷基二苯醚磺酸盐可作为助表面活性剂用于特殊的油藏条件，有必要尽快开发可行的工业化生产工艺；脂肪醇醚磺酸盐类表面活性剂的原料来源丰富，分子结构可变性强，耐电解质能力强，尤其是耐钙能力强，应用领域广，极具工业化价值。

Very popular among loopers the world over.

蝴蝶 波尔，这款底板是我自己的选择，其中使用了芳基碳素层来平衡速度与吃球的时间，在全世界的弧圈球选手中非常流行，德国的顶级选手蒂姆波尔选用的底板。

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％。