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The reductive amination reaction of acetone by cyclohexylamine over hydrogenation metal catalysts was investigated. The study
is focused on the formation of side products in the reaction. It was verified that the formation of amines having unusual
combinations of alkyls is caused by the metal-catalyzed rearrangement of the double bond around the nitrogen atom in an imine
intermediate and consequent reactions of the isomeric imine. It was found that the isomerization reactions occur over virtually
all of the hydrogenation catalysts studied, while their respective activities for the imine isomerization decreases in the
order Ni = Co > Ru > Pt = Rh > Pd. 相似文献
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研究了通过烯丙基环状氨基甲酸酯的脱环羧化得到2-取代-△^3-哌啶和吡咯烷的机理, 并讨论了应用这一反应于新疆党参碱的全合成。 相似文献
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The present report deals with the stereochemistry of the degradation products of arteannuin and some intermediates of its total synthesis. The configurations of 13-CH3 and lactone ring are deduced by using spin-spin coupling constants and the pattern of 11-H as well as the NOE results from 1H NMR spectroscopy. 相似文献
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叠氮基-丙二酸烷叉酯的分子内1,3-二极环加成和环翻转反应被用于制备异缩合杂环芳香吡咯的新方法, 报导了这一方法用于合成2,4-二氢吡咯[3,4-b]吲哚环系, 同样这一环系被用于椭园玫瑰树碱的全合成。 相似文献
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