《Photo-driven haloazidation cyclization of 1,5-enynes having cyano groups with TMSN3 and NIS/NCS/NBS under metal-free conditions》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Zou, Long; Wang, Lei; Sun, Li; Xie, Xiaofei; Li, Pinhua. SDS of cas: 516-12-1 The article mentions the following:
A visible-light-driven three-component haloazidation cyclization of 1,5-enynes I (R1 = H, 3-F, 4-Me, 5-MeO, etc.; R2 = cyclopropyl, Ph, 4-BrC6H4, 3-pyridyl, etc.) having cyano groups with TMSN3, and N-halosuccinimides (halo = X = I, Cl, Br) under metal-free and oxidant-free conditions to afford the corresponding (halovinyl)indans II has been developed. The reaction proceeds via radical addition/5-exo-dig cyclization/radical coupling process with the successive formation of C-N, C-C, and C-halogen (Cl, Br, and I) bonds, which is initiated by the addition of an azidyl radical to the carbon-carbon double bond of the 1,5-enyne. In the experiment, the researchers used 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1SDS of cas: 516-12-1)
1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. SDS of cas: 516-12-1
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com