A mild and efficient method for N-alkylation of aromatic amines with various acetals such as aryl, alkyl, cyclic and acyclic acetals was developed. A number of aromatic amines bearing electron-donating or electron-withdrawing substituents were directly alkylated by acetals with excellent yields. The method uses a catalytic amount of I2 and triethylsilane as the hydride source without a metal present
开发了一种温和有效的方法,用于芳胺与各种
缩醛(如芳基、烷基、环状和无环
缩醛)的 N-烷基化。许多带有给电子或吸电子取代基的芳香胺被
缩醛直接烷基化,收率极好。该方法使用催化量的 I2 和三乙基
硅烷作为不存在
金属的
氢化物源。观察到具有优异
化学选择性的单烷基化。