Intramolecular Addition of a Dimethylamino C(sp3)-H Bond across C-C Triple Bonds Using IrCl(DTBM-SEGPHOS)(ethylene) Catalyst: Synthesis of Indoles from 2-Alkynyl-N-methylanilines was written by Ohmura, Toshimichi;Yagi, Kaito;Torigoe, Takeru;Suginome, Michinori. And the article was included in Synthesis in 2021.Reference of 39722-81-1 This article mentions the following:
Intramol. addition of a C(sp3)-H bond of the dimethylamino group across the C-C triple bond in 2-alkynyl-N,N-dimethylanilines is effectively catalyzed by a new iridium complex, IrCl(DTBM-SEGPHOS)(C 2H4), in mesitylene at 150°C. The intramol. C(sp3)-H addition is followed by double-bond isomerization to afford 3-substituted indoles in good to high yields. In the experiment, the researchers used many compounds, for example, Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1Reference of 39722-81-1).
Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Reference of 39722-81-1
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics