Tetramethylammonium dichloroiodate: an efficient and environmentally friendly iodination reagent for iodination of aromatic compounds under mild and solvent-free conditions.

Tetramethylammonium dichloroiodate (1, TMADCI) as a mild and efficient iodination reagent was prepared. Iodination of different aromatic compounds with this reagent takes place fast and with high yields under solvent-free conditions.