Yan, Dingyuan et al. published their research in Nature Communications in 2018 | CAS: 1146-43-6

N-(4-Hydroxyphenyl)-4-methylbenzenesulfonamide (cas: 1146-43-6) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. 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

A selenium-catalysed para-amination of phenols was written by Yan, Dingyuan;Wang, Guoqiang;Xiong, Feng;Sun, Wei-Yin;Shi, Zhuangzhi;Lu, Yi;Li, Shuhua;Zhao, Jing. And the article was included in Nature Communications in 2018.Recommanded Product: 1146-43-6 This article mentions the following:

Se-catalyzed para-amination of phenols was reported while, in contrast, the reactions with sulfur donors were stoichiometric. A catalytic amount of phenylselenyl bromide smoothly converts N-aryloxyacetamides to N-acetyl p-aminophenols. When the para position was substituted (for example, with tyrosine), the dearomatization occurred and 4,4-disubstituted cyclodienone products were obtained. A combination of exptl. and computational studies was conducted and suggested the weaker Se-N bond plays a key role in the completion of the catalytic cycle. Our method extends the selenium-catalyzed processes to the functionalization of aromatic compounds Finally, the mild nature of the para-amination reaction was demonstrated by generating an AIEgen 2-(2′-hydroxyphenyl)benzothiazole (HBT) product in a fluorogenic fashion in a PBS buffer. 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. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. 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