Polyvinylpolypyrrolidone–bromine complex: Mild and efficient polymeric reagent for bromination of activated aromatic compounds

Mild and efficient method for bromination of electron-rich aromatic compounds is described using polyvinylpolypyrrolidone–bromine complex (PVPP–Br2). The reaction proceeded smoothly with phenols and N,N-alkylated amines to afford the corresponding monobrominated product in good yields at ambient temperature.