the n substituents are u03b2 3 5 di t butyl 4 hydroxyphenyl ethyl u03b2 3 methyl 5 t butyl 4 hydroxyphenyl ethyl u03b2 3 5 diphenyl 4 hydroxyphenyl ethyl u03b2 3 benzyl 5 methyl 4 hydroxyphenyl ethyl u03b2 3 t butyl 4 hydroxyphenyl ethyl u03b2 2 methyl 3 5 di t butyl 4 hydroxyphenyl ethyl u03b2 3 5 diisopropyl 4 hydroxy phenyl ethyl u03b3 3 5 di t butyl 4 hydroxyphenyl propyl u03b3 3 methyl 5 t butyl 4 hydroxyphenyl propyl u03b2 methyl y 3 5 di t butyl 4 hydroxyphenyl propyl u03b5 3 t butyl 4 hydroxyphenyl pentyl or the like the preferred tertiary sulfonamides of the invention are n n bis u03b2 3 5 di t butyl 4 hydroxyphenyl ethyl methanesulfonamide n n bis u03b2 3 5 diisopropyl 4 hydroxyphenyl ethyl methanesulfonamide and n n bis u03b2 3 methyl 5 t butyl 4 hydroxyphenyl ethyl methanesulfonamide the tertiary sulfonamides may be prepared by reacting the appropriate sulfonyl halide corresponding to the formula r 39 so 2 x with the appropriate secondary amine corresponding to the formula x representing halo preferably chloro or bromo and r r 39 r 34 and n being as previously defined thus for example a sulfonyl halide such as methanesulfonyl chloride 1 butanesulfonyl bromide 1 pentanesulfonyl chloride 1 decanesulfonyl chloride or benzenesulfonyl chloride is reacted with a secondary amine such as bis u03b2 3 5 di t butyl 4 hydroxyphenyl ethyl amine bis u03b3 3 methyl 5 t butyl 4 hydroxyphenyl propyl amine or other such amine in the synthesis of the tertiary sulfonamides the amines and sulfonyl halides are reacted in a mol ratio of about 0 5 1 1 preferably about 0 9 1 in a solvent which is inert to the reaction and which is.