New halogenation reagent system for one-pot conversion of alcohols into iodides and azides

In situ generation of hydrogen iodide from methane-sulphonic acid/sodium io dide in different solvents was found to be an attractive reagent system for the chemoselective conversion of various alcohols to their corresponding i odides. Moreover, treatment of benzylic and allylic alcohols with this reag ent system, followed by substitution with azide ion, produced the correspon ding azides in one pot in good yields.