Indirect Electrooxidation of Alcohols by a Double Mediatory System with [R2N+= O]/R2N-O . and [Br. or Br+]Br-Redoxes

Abstract

A double mediatory system consisting of N-oxoammonium salts and active bromine species, generated from 2,2,6,6-tetramethylpiperidine-1-oxyl derivatives and bromide ion as recyclable reagents, is useful for the selective electrooxidation of primary and secondary alcohols to aldehydes and ketones, respectively, in an aqueous-organic two-phase system.