Oxidative bromination reaction using Cu2+-perfluorophthalocyanine-immobilized silica gel catalyst under mild reaction conditions

A simplified, facile route has been applied for the grafting of copper(II) perfluorophthalocyanine complex onto functionalized silica gel. The resulting organic-inorganic hybrid material is used as an efficient and recyclable catalyst for the regioselective oxidative bromination of various aromatic substrates using KBr/H2O2 as the reagents, affording high yields under mild conditions. High catalytic activity efficiency could be attributed to the heterogenization of soluble metal complexes on the high surface area host.

A silica gel-supported copper(II) perfluorophthalocyanine complex has been found to be an efficient and recyclable catalyst in the regioselective oxidative bromination of various aromatic substrates.