Zarchi, Mohammad Ali Karimi et al. published their research in Journal of Applied Polymer Science in 2012 | CAS: 1146-43-6

N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.COA of Formula: C13H13NO3S

Convenient synthesis of sulfonamides from amines and p-toluenesulfonyl chloride mediated by crosslinked poly(4-vinylpyridine) was written by Zarchi, Mohammad Ali Karimi;Aslani, Mariam. And the article was included in Journal of Applied Polymer Science in 2012.COA of Formula: C13H13NO3S This article mentions the following:

A general, mild, and convenient method has been developed for the synthesis of various N-substituted and N,N-disubstituted sulfonamides, as a class of sulfa drugs, from the corresponding amines and p-toluenesulfonyl chloride in the presence of readily available crosslinked poly(4-vinylpyridine) as a catalyst, base or polymeric substrates. The use of polymeric catalyst simplifies routine sulfonylation of amines because it eliminates the traditional purification The polymer can be removed quant. and it can be regenerated and reused for several cycles without losing its activity. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011. In the experiment, the researchers used many compounds, for example, N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6COA of Formula: C13H13NO3S).

N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6) belongs to amides. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well. Thus amides can participate in hydrogen bonding with water and other protic solvents; the oxygen atom can accept hydrogen bonds from water and the N–H hydrogen atoms can donate H-bonds. Amides are not in general accessible by the direct condensation of amines with carboxylic acids for two reasons: first, both components are readily deactivated by a transfer of a proton from the acid to the amine and second, the hydroxy unit on the carbonyl of the acid is a relatively poor leaving group. Nevertheless, the formation of five- and six-membered rings is often surprisingly simple provided that other factors can be brought into play to assist in the condensation.COA of Formula: C13H13NO3S

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics