a new and convenient procedure has been developed for the preparation of sulfonamides
from sodium sulfinates and amines with (n-C4H9)4NBr as bromine source and m-chloroperbenzoic acid as oxidant. This S–N bond formation reaction proceeds efficiently
via sulfonyl bromides under neutral conditions to afford the corresponding sulfonamides
in good yields at room temperature.
Key words
sulfonamides - sodium sulfinates - amines - (
n-C
4H
9)
4NBr - sulfonyl bromides