In 2022,Yu, Xiao; Zhu, Wenjing; Liu, Hongyan; Liu, Yi; Li, Hongshuang; Han, Junfen; Duan, Guiyun; Bai, Zhushuang; Zhang, Pengfei; Xia, Chengcai published an article in Organic & Biomolecular Chemistry. The title of the article was 《Practical chemoselective aromatic substitution: the synthesis of N-(4-halo-2-nitrophenyl)benzenesulfonamide through the efficient nitration and halogenation of N-phenylbenzenesulfonamide》.SDS of cas: 16629-19-9 The author mentioned the following in the article:
A novel route involving the metal-promoted tandem nitration and halogenation of N-phenylbenzenesulfonamide to synthesize N-(4-halo-2-nitrophenyl)benzenesulfonamide derivatives has been developed. The method shows highly practical chemoselective and functional group compatibility. In addition, it employs insensitive and inexpensive Cu(NO3)2·3H2O, Fe(NO3)3·9H2O, and NH4NO3 as the nitration reagents, and it provides a direct approach for the preparation of 4-halo-2-nitroaniline, which is a crucial intermediate for the synthesis of benzimidazoles and quinoxaline derivatives In addition to this study using Thiophene-2-sulfonyl chloride, there are many other studies that have used Thiophene-2-sulfonyl chloride(cas: 16629-19-9SDS of cas: 16629-19-9) was used in this study.
Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. SDS of cas: 16629-19-9
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics