A number of amines have been alkylated at the position alpha to nitrogen via free radical methodology. N-(2-Iodobenzyl) 'protected' amines have been used to generate radicals which rapidly undergo a 1,5-hydrogen shift to give more stable alpha-amino radicals. These can subsequently be trapped by electron deficient alkenes to give alpha-alkylated amines.
efficient ruthenium-catalyzed method has been developed for the direct N-alkylation of sulfur-containing amines with alcohols, for the first time, by a step-economical and environmentally friendly hydrogenborrowing strategy. The present methodology features base-free conditions and broad substrate scope, with water being the only by-product. Moreover, this protocol has been applied to the synthesis of the
A number of amines have been alkylated at the position alpha to nitrogen via free radical methodology. N-(2-Iodobenzyl) 'protected' amines have been used to generate radicals which rapidly undergo a 1,5-hydrogen shift to give more stable alpha-amino radicals. These can subsequently be trapped by electron deficient alkenes to give alpha-alkylated amines.