<i>N</i>‐Tosyloxycarbamates as Reagents in Rhodium‐Catalyzed CH Amination Reactions
作者:Kim Huard、Hélène Lebel
DOI:10.1002/chem.200702027
日期:2008.7.7
nitrenes for use in C-H insertion reactions were obtained from N-tosyloxycarbamates in the presence of an inorganic base and a rhodium(II) dimer complex catalyst. The C-H amination reaction proceeds smoothly, and the potassium tosylate that forms as a byproduct is easily removed by filtration or an aqueous workup. This new methodology allows the amination of ethereal, benzylic, tertiary, secondary
在无机碱和铑(II)二聚配合物催化剂的存在下,由N-甲苯磺酰氨基甲酸酯获得用于CH插入反应的金属腈。CH胺化反应平稳进行,并且通过过滤或水后处理可轻松除去作为副产物形成的甲苯磺酸钾。这种新方法允许胺基,苄基,叔,仲,甚至伯CH键的胺化。分子内反应为各种取代的恶唑烷酮提供了一种有趣的途径,而分子间反应则得到了三氯乙氧羰基保护的胺,可以以中等至极好的收率进行分离,并易于裂解生成相应的游离胺。本文讨论了反应的发展,范围和局限性。