烯基
- 与 烯基 相关的网络例句 [注:此内容来源于网络,仅供参考]
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During the low temperature plasma polymerization, different factors (reaction power, pulse duty factor, reaction time, bias voltage and pressure) were investigated to get the best film. The results of X-ray photoelectron spectroscopy and Fourier transformed infrared spectoscopy implied that polymer nano-film containing carboxyl or amido were deposited successfully by using allylamine or acrylic acid as a reagent, respectively.
低温等离子聚合过程中,研究了反应的功率、脉冲占空比、反应时间、偏压、反应室压强这五个因素对薄膜性质的影响,确定了最佳的工艺参数。X光电子能谱和傅立叶转换红外光谱分析结果表明,以丙烯胺和丙烯酸为反应物可以在样品表面分别得到含有羧基或氨基的有机薄膜。
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Objective To research the effects of a chiral aminoalcohol in the asymmetric allylation of acylhydrazones.
目的 研究手性氨基醇在酰腙不对称烯丙基化反应中的促进作用。
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The activation energy and rate constant of the allylation reaction was calculated in virtue of kinetic study.
进行了动力学研究,获得了反应活化能和各反应温度下的反应速率常数,同时研究结果表明烯丙基化反应级数为2,反应机理为S(来源:A16BC论文网www.abclunwen.com)N2 亲核取代反应。
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Last, we studied the allylation of benzoylhydrazones with allyltrichlorosilane.
在研究过程中,发现了一个C=N双键烯丙基化的新方法,和苯甲酰肼的新的合成方法。
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The palladium-catalyzed allylation is a powerful tool for C-C, C-N, and C-O bond formation, which has been widely applied to organic chemistry.
藉由钯催化烯丙基化反应合成碳—碳键、碳—氮键和碳—氧键是非常有利的方法,主要是因为它在有机化学上广泛的应用性。
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Selective allylation of the linear, cyclic and mixed diketones in the presence of water by allyl bromide and metallic zinc have been successfully achieved.
本文报道锌参与下水相介质中对称双酮及混合双酮的选择性烯丙基化反应的研究。
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This article summarizes the latest research progress of the allylation reaction mediated by metals in aqueous media, and the new reaction mechanism is explained briefly.
本文综述了水相中金属参与烯丙基化反应的最新研究进展,并对新的反应机理作了简要的阐述。关键词:谢斌,冯建申邹立科,张秀兰
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The palladium-catalyzed allylation is a powerful tool for C-C, C-N, and C-O bond formation, which has been widely applied to organic chemistry.
而利用金属钯当作催化剂来进行烯丙基化反应,形成碳-碳键,碳-氮键和碳-氧键,在有机化学中是很广泛的合成方法。
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It was found that the binaphthyl backbone of S configuration was matched to the S, S pyrrolidino group. In this case, the asymmetric allylation product could be obtained in 85. 6% ee.
轴手性是S构型时,和中心手性S,S构型相匹配,它和钯形成的络合物在催化烯丙基取代反应时,取得了比不含中心手性因素的吡咯烷基氮膦配体高得多的对映选择性,可以得到85.6%ee值的产物。
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In this system, the allylation was selectively toward aldehyde in the presence of ketone; the allylation squinted toward aliphatic aldehyde in the presence of aromatic aldehyde.
该方法不仅对于醛和酮具有很高的化学选择性,而且对于芳香醛和脂肪醛也有很好的选择性,当存在芳香醛时,脂肪醛优先发生烯丙基化反应。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。