Tohma, Hirofumi et al. published their research in Heterocycles in 1999 | CAS: 1146-43-6

N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. 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.Recommanded Product: 1146-43-6

Novel one-pot preparation of 5-methoxylated indoline and indole derivatives using a hypervalent iodine(III) reagent was written by Tohma, Hirofumi;Watanabe, Hiroaki;Takizawa, Shinobu;Maegawa, Tomohiro;Kita, Yasuyuki. And the article was included in Heterocycles in 1999.Recommanded Product: 1146-43-6 This article mentions the following:

A novel and efficient one-pot preparation of 5-methoxy-1-tosylindolines and -indoles from N-tosyl-p-anisidines and activated olefins using phenyliodine(III) bis(trifluoroacetate) is described. In the experiment, the researchers used many compounds, for example, N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6Recommanded Product: 1146-43-6).

N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6) belongs to amides. Amides include many other important biological compounds, as well as many drugs like paracetamol, penicillin and LSD. Low-molecular-weight amides, such as dimethylformamide, are common solvents. 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.Recommanded Product: 1146-43-6

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