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Palladium-catalysed anti-Markovnikov selective oxidative amination
Nature Chemistry ( IF 19.2 ) Pub Date : 2018-01-01 , DOI: 10.1038/nchem.2904
Daniel G. Kohler , Samuel N. Gockel , Jennifer L. Kennemur , Peter J. Waller , Kami L. Hull

In recent years, the synthesis of amines and other nitrogen-containing motifs has been a major area of research in organic chemistry because they are widely represented in biologically active molecules. Current strategies rely on a multistep approach and require one reactant to be activated prior to the carbon–nitrogen bond formation. This leads to a reaction inefficiency and functional group intolerance. As such, a general approach to the synthesis of nitrogen-containing compounds from readily available and benign starting materials is highly desirable. Here we present a palladium-catalysed oxidative amination reaction in which the addition of the nitrogen occurs at the less-substituted carbon of a double bond, in what is known as anti-Markovnikov selectivity. Alkenes are shown to react with imides in the presence of a palladate catalyst to generate the terminal imide through trans-aminopalladation. Subsequently, olefin isomerization occurs to afford the thermodynamically favoured products. Both the scope of the transformation and mechanistic investigations are reported.



中文翻译:

钯催化的马尔可夫尼科夫选择性氧化胺化

近年来,胺和其他含氮基序的合成一直是有机化学研究的一个主要领域,因为它们广泛地存在于生物活性分子中。当前的策略依赖于多步骤方法,并要求在形成碳氮键之前先活化一种反应物。这导致反应效率低下和官能团不耐受。因此,非常需要从容易获得的和良性的起始原料合成含氮化合物的一般方法。这里,我们提出一个钯催化的胺化的氧化反应,其中在添加氮的发生在双键的较少取代的碳,在所谓的马尔可夫尼科夫选择性。已显示烯烃在palladate催化剂的存在下与酰亚胺反应,以通过反式-氨基palladation生成末端酰亚胺。随后,发生烯烃异构化以提供热力学上有利的产物。既报告了转换范围,也报告了机制研究。

更新日期:2018-01-01
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