《Visible-light-promoted N-centered radical generation for remote heteroaryl migration》 was published in Organic & Biomolecular Chemistry in 2020. These research results belong to Liu, Chengkou; Cai, Chen; Yuan, Chengcheng; Jiang, Qiang; Fang, Zheng; Guo, Kai. SDS of cas: 16629-19-9 The article mentions the following:
An efficient visible-light-mediated N-H heteroarylation via remote heteroaryl ipso-migration was accomplished. Moderate to good yields were obtained with good functional group tolerance. Moreover, a simple and readily available organic photoredox catalyst was employed, avoiding the use of complex and costly noble metal compounds In the part of experimental materials, we found many familiar compounds, such as Thiophene-2-sulfonyl chloride(cas: 16629-19-9SDS of cas: 16629-19-9)
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