Highly efficient and mild synthesis of nitrones by catalytic oxidation of hydroxylamines with tetra-n-propylammonium perruthenate
作者:Andrea Goti、Francesco De Sarlo、Michela Romani
DOI:10.1016/s0040-4039(00)78275-x
日期:1994.8
Oxidation of N,N-disubstituted hydroxylamines by N-methylmorpholine N-oxide (NMO) and catalytic amounts of tetra-n-propylammonium perruthenate (TPAP) at room temperature occurs very rapidly to give the corresponding nitrones, which can be trapped by dipolarophiles present in the reaction mixture, in excellent yields. A competitive experiment in the presence of a primary alcohol gave a > 50:1 nitrone