354
Poly(N,Nʹ-dichloro-N-ethyl-benzene-1,3-disulfonamide, N,N,Nʹ,Nʹ-tetrachlorobenzene-1,3-disulfonamide, Poly(N,Nʹ-dibromo-N-ethyl-benzene-1,3-disulfonamide, and N,N,Nʹ,Nʹ-Tetrabromobenzene-1,3-disulfonamide Catalyzed Formylation of Amines and Alcohols Using