• 引入苯胺邻位

    Chlorine is introduced into the ortho-position of aniline.

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  • 实验研究一系列N-邻位取代苯基马来酰亚胺的合成。

    In this study we synthesized a series of N-(o-substituted phenyl) maleimides.

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  • 讨论了酚醛树脂合成其它助剂减震性能影响

    In this paper, the synthetic method of high-ortho resol resin and influence of other chemicals ingredients on the adhesive was discussed.

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  • 适宜修复有助于容貌恢复,其中随意皮瓣效果较

    Appropriate reconstruction may favor the restoration of facial appearance, and local random flaps appear to be the best reconstruction strategy.

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  • 发现一种简便制备邻位吸电子取代基膦酰基化合物方法

    A simple method of preparation of phosphonic heterocyclic compounds has been found.

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  • 邻位、间氟甲基苯酚都是重要医药农药染料中间体

    The o-, m-, p-trifluoromethyl phenol were important intermediates in medicines, pesticides and dyes.

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  • 硝基上存在的氢键给体基,与硝基形成分子内氢键。

    Donors such as amine and phenolic groups, when positioned ortho to a nitro group, are always involved in intramolecular hydrogen bonding.

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  • 本文主要研究了一种利用氮杂环丙烷反应合成邻位氨基醇有机反应。

    This paper reports a new green ring opening reactions of aziridines with H_2O.

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  • 苯酚的生物降解组分的降解基因控制,形成不同代谢途径

    Phenol biodegradation is controlled by multi component genes to form different catabolic pathways of meta position and ortho position.

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  • 邻位-取代的苯甲酰基胍,制备方法,作为药物诊断剂的应用含它们的药物。

    Ortho-substd. benzoyl guanidines, their preparing process and use as medicine and diagnostic reagent, and medicine contg. same.

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  • 迄今为止的研究报道表明,对氯苯胺生物降解只能邻位途径或修饰邻位途径进行。

    Up to date, p-chloroaniline was reported to be biodegraded only through ortho-or modified ortho-cleavage pathway.

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  • 羧基邻位羟基存在时,则双齿形式钛配形成二茂钛六元环状化合物

    And if there is a hydroxyl in ortho position of carboxyl, the oxygen of hydroxyl and carboxyl in ligand are bound to ti to form hexatomic cyclic compound.

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  • 随着反应时间延长,有羟基双硝基化以及羟基两个邻位硝基化产物生成。

    Dinitrations occurred at two ortho-positions or both ortho- and para-positions to the hydroxy group with longer reaction time than mononitration.

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  • 方法解剖学研究基础上,设计足底内侧邻位筋膜皮瓣修复足跟部皮肤软组织缺损

    Methods The authods based on anatomical studies, a plantar fascia flap was designed for coverage of defects of the heel.

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  • 指出,共振核—CF 2—化学不仅第一基团影响,第三邻位的影响。

    These results indicated that the chemical shifts of central -cf2 - group are not only affected by the first and the second neighboring groups, but also by the third neighboring group.

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  • 发现反应邻位取代为底物的情况下,-氟可以被打断并有效地形成碳-碳键。

    A C-F cleavage reaction was found when using ortho-fluoro substituted benzonitrile, which resulted in the formation of new C-C bond.

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  • 结果表明,苯胺氨基邻位引入,单体电化学聚合速率显著下降形成聚合物更易水解。

    After chlorine is introduced into the ortho-position of aniline, the polymerization rate of the monomer decreases markedly, the formed polymer is hydrolyzed easily.

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  • 此外实现了由邻位卤代芳香9-菲酚衍生物9,10-菲醌衍生物的“一锅法”合成。

    Moreover, 'one-pot' methods to prepare the derivatives of 9-phenanthrol and 9,10-phenanthrenequinone from the ortho-halogenated aromatic aldehydes were also developed.

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  • 对于取代络合物ma4b2平面排列三个异构体常见的为有机化学中的、间排列。

    FOR a disubstituted complex, MA4B2, the planar arrangement gives three isomers, the familiar ortho, meta, and para arrangements of organic chemistry.

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  • 通过红外光谱确认为目标产物,并通过特征峰峰强度计算得到亚甲基邻位结构结构相对比例

    The results of IR showed that the as-prepared novolac was target and the relative proportion of o-methylene and p-methylene.

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  • 由于此物质CF 3具有吸电子能力,所以其氯更易被取代,这就说明此反应理论上是能够发生的。

    Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.

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  • 研究表明酰类多元酚可形成络合物络合物铝和棓酰基苯三酚的羟基形成的,稳定的五员螯合结构

    It is show that the complexes of galloyl type hydrolysable tannins with aluminum are formed which involve five-member ring stably formed adjacent hydroxyl groups in galloyl to aluminum atoms.

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  • 采用我国海南岛腰果制得的槚如果酚合成了高邻位热固性酚醛树脂,对所合成的树脂结均、固化条件、固化后树脂性能进行了分析

    The paper analyses the structure, curing conditions and the properties of the cardanol resol which can be made from cashew nut oil produced in Hainan Island.

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  • 生长ND6菌株细胞提取液中存在催化裂解途径的儿茶酚1,2-双加氧酶活性,也存在催化间裂解途径的儿茶酚2,3-双加氧酶活性。

    When naphthalene was used as a substrate for growth of strain ND6, catechol 1,2-dioxygenase and catechol 2,3-dioxygenase activities were both detected in their crude extract.

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  • 羟基处于醛基邻位和对甲醛与几种苯乙酮衍生物的缩合,多数没有得到预期的产物,收率极低;苯乙酮的羟基对缩合反应影响很大,羟基越多,缩合越困难。

    The groups in ring of benzaldehydes, no matter they are electron withdrowing or electron donating except of hydroxy, do not seem to have much effect on the yield.

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  • 我们大四舞会拉开序幕后,高兴地发现自己有机会去和男生约会了。连续举办几个夜晚舞会上,我们互相邀请着前往

    W hen my senior prom rolled around, I found myself in the happy position of dating a boy from a neighboring town; we invited each other to our proms, which were on consecutive nights.

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  • 坐在男士无意间听到了WHENIF的谈话。

    The man at the next table couldn't help overhearing WHEN and IF.

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  • 测量房地产测量界址精度至关重要直接影响地的面积及其关系

    In the survey of cadastre and real estate, it is very important for position precision of boundary point because it directly influences parcel area and position relationship around it.

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  • 测量房地产测量界址精度至关重要直接影响地的面积及其关系

    In the survey of cadastre and real estate, it is very important for position precision of boundary point because it directly influences parcel area and position relationship around it.

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