Nitrogen Kinetic Isotope Effects for the Monoamine Oxidase B-Catalyzed Oxidation of Benzylamine and (1,1-2H2)Benzylamine: Nitrogen Rehybridization and CH Bond Cleavage Are Not Concerted
摘要:
Nitrogen kinetic isotope effects for the oxidation of benzylamine and (1,1-H-2(2))benzylamine by recombinant human monoamine oxidase B show that cleavage of the CH bond is not concerted with rehybridization of the nitrogen atom.
Reductive Deuteration of Nitriles Using D<sub>2</sub>O as a Deuterium Source
作者:Yuxuan Ding、Shihui Luo、Chaoqun Weng、Jie An
DOI:10.1021/acs.joc.9b02056
日期:2019.12.6
The first single electron transfer reductive deuteration of nitriles using D2O as a deuterium source has been developed for the synthesis of valuable α,α-dideuterio amines. A mild reductant (SmI2) was employed as the electron donor with Et3N as the additive. This reaction is amenable to both aromatic and aliphatic nitriles and features high deuterium incorporation, excellent regioselectivity, and good
Hydrosilylative reduction of primary amides to primary amines catalyzed by a terminal [Ni–OH] complex
作者:Pragati Pandey、Jitendra K. Bera
DOI:10.1039/d1cc03537a
日期:——
complex 1, supported by triflamide-functionalized NHC ligands, catalyzes the hydrosilylative reduction of a range of primaryamides into primaryamines in good to excellent yields under base-free conditions with key functional group tolerance. Catalyst 1 is also effective for the reduction of a variety of tertiary and secondary amides. In contrast to literature reports, the reactivity of 1 towards
Facile and Convenient Method of Deuterium Gas Generation Using a Pd/C-Catalyzed H2–D2 Exchange Reaction and Its Application to Synthesis of Deuterium-Labeled Compounds
The Pd/C-catalyzed H(2)-D(2) exchange reaction using a H(2)-D(2)O combination provided a general, efficient and environmentally friendly route for the preparation of deuterium gas (D(2)). H(2) sealed in a reaction flask was converted into nearly pure D(2), which could be used for the Pd/C-catalyzedone-potreductive deuteration of various reducible functionalities and the chemoselective one-pot deuterogenation
The preparation of primary amines from nitriles has been a subject of continuing interest, and many different methods have been reported for this process. We report in this paper an alternative method for transforming nitriles into primary amines. In this work, a wide range of nitriles were reduced to primary amines by 1.2 equiv of ammonia borane under thermal decomposition conditions without any catalyst
从腈类制备伯胺一直是人们持续关注的课题,并且已经报道了许多用于该过程的不同方法。我们在本文中报告了一种将腈转化为伯胺的替代方法。在这项工作中,在没有任何催化剂的热分解条件下,通过 1.2 当量的氨硼烷将多种腈还原为伯胺,并以良好至极好的收率分离出相应的伯胺。与 H 2和 NH 3的反应对环境无害作为副产品生成。这些反应还可以容忍许多官能团。腈类可能被原位生成的氨基二硼烷还原,其在有机合成中的应用以前从未被报道过。通过使用我们的协议,成功制备了含有多氟化芳环的伯胺,这在药物合成中非常重要,很少通过催化过程制备。