Practical and regioselective halogenations of aromatic compounds using tetrabutylammonium peroxydisulfate

Abstract

The halogenated aromatic compounds have been important intermediates for various synthetic methods. Electron-rich aromatic compounds were easily iodinated using tetrabutylammonium peroxydisulfate (1) and iodine in mild conditions with excellent yields. Bromination. was achieved using 1 and bromine, and regioselective bromination of highly activated aromatic compounds was also achieved using 1 and lithium bromide in mild conditions with excellent yields.