The present disclosure provides a method for the preparation of aromatic sulfonyl halides by contacting a substituted phenyl compound with a halosulfonic acid and trifluoroacetic acid. The present disclosure further provides a method for the preparation of 4-[5-methyl-3-phenylisoxazol-4-yl]benzenesulfonamide which is useful in treating cyclooxygenase-2 related disorders.
