用活化的铝在醇中还原苯亚甲基烷基胺导致形成 N, N' - 二烷基 - α, α' - 二苯基乙二胺(二聚体产物)和苄基烷基胺(单体产物)的混合物。铝表面上醛亚胺的保留时间对于二聚体产物:单体产物的比例是决定性的。二聚体产物的形成需要较短的保留时间,而单体产物的形成需要较长的保留时间。它们一方面取决于席夫碱的碱度、温度以及一方面取决于席夫碱与另一方面取决于醇分子之间的相互作用。
Samarium diiodide/nickel diiodide an efficient system for homo and heterocoupling reactions of imines
作者:Fouzia Machrouhi、Jean-Louis Namy
DOI:10.1016/s0040-4039(98)02673-2
日期:1999.2
Samariumdiiodide in the presence of a catalytic amount of nickel diiodidemediates a very fast dimerization of imines into vicinal diamines and the mixed coupling of imines and ketones to give β-amino alcohols.
Reductive amination with zinc powder in aqueous media
作者:Giovanni B Giovenzana、Daniela Imperio、Andrea Penoni、Giovanni Palmisano
DOI:10.3762/bjoc.7.125
日期:——
Zincpowder in aqueous alkaline media was employed to perform reductive amination of aldehydes with primary amines. The corresponding secondary amines were obtained in good yields along with minor amounts of hydrodimerization byproducts. The protocol is a green alternative to the use of complex hydrides in chlorinated or highly flammable solvents.