Fluorosulfonylation of arenediazonium tetrafluoroborates with Na2S2O5 and N-fluorobenzenesulfonimide was written by Liu, Shuai;Huang, Yangen;Xu, Xiu-Hua;Qing, Feng-Ling. And the article was included in Journal of Fluorine Chemistry in 2020.Application In Synthesis of 3-Bromobenzene-1-sulfonyl fluoride This article mentions the following:
A transition-metal-free Sandmeyer-type fluorosulfonylation reaction has been achieved by the three-component reaction of arenediazonium tetrafluoroborates, Na2S2O5, and N-fluorobenzenesulfonimide (NFSI). The reaction proceeds through a radical tandem process, affording various arenesulfonyl fluorides I (R = 4-Me, 4-OMe, 4-COOEt, etc.) in moderate to high yields. This protocol not only provides a complement to the previous fluorosulfonylation reactions, but also extends the applications of Sandmeyer reaction. In the experiment, the researchers used many compounds, for example, 3-Bromobenzene-1-sulfonyl fluoride (cas: 454-65-9Application In Synthesis of 3-Bromobenzene-1-sulfonyl fluoride).
3-Bromobenzene-1-sulfonyl fluoride (cas: 454-65-9) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Application In Synthesis of 3-Bromobenzene-1-sulfonyl fluoride
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary