POLYMER-BOUND BENZYLTRIETHYLAMMONIUM POLYHALIDES - RECYCLABLE REAGENTS FOR THE SELECTIVE IODINATION OF AMINES AND PHENOLS

Polymer-bound benzyltriethylammonium dichloroiodate, tetrachloroiodate and dibromoiodate reagents were developed as new recyclable solid pha se reagents. The use of these polymeric polyhalides for the iodination of activated benzene and naphthalene derivatives such as amines and p henols is described. The spent reagents after the synthetic reactions were easily removed by filtration and were regenerated for further use . The efficiency of these reagents towards monoselectivity in aromatic iodination and the variation of reactivity of the iodinating reagents as a function of the nature of solvent, effective molar concentration and temperature were investigated.