TBHP/R 4 N + X – promoted hydroaroylation of dialkyl azodicarboxylates with methyl arenes, aldehydes, aryl methanols and arylmethyl chlorides

Abstract Efficient TBHP/R 4 N + X – promoted hydroaroylations of dialkyl azo-1,2-dicarboxylates with methyl arenes, aldehydes, aryl methanols and arylmethyl chlorides are described. These oxidation/oxygenation and hydroaroylation processes were carried out by tert -butyl hydroperoxide as terminal oxidant/oxygen source, and were catalyzed by tetrabutylammonium bromide and tricaprylmethylammonium chloride as the driving force. During this investigation, all these hydroaroylating sources were found to be highly efficient reagents without the need of any transition-metal.