Transition metal- and catalyst-free one-pot green method for the synthesis of <i>N</i>-sulfonyl amidines <i>via</i> direct reaction of sulfonyl azides with amines
synthesis of N-sulfonyl amidines via the direct reaction of tertiary or secondary amines with sulfonyl azides is described. Transition metal- and catalyst-free conditions were used for the synthesis of biologically important N-sulfonyl amidines. Further studies showed that the reaction proceeded via in situ aerobic oxidation of aminesunder reflux conditions.