Iridium-catalyzed Enantioselective Intramolecular Cross-dehydrogenative Coupling of Alkyl Aryl Ethers Giving Enantioenriched 2,3-Dihydrobenzofurans was written by Kusaka, Satoshi;Ohmura, Toshimichi;Suginome, Michinori. And the article was included in Chemistry Letters in 2022.Electric Literature of C8H16Cl2Ir2 This article mentions the following:
Aryl 2-silyloxyprop-1-yl ethers underwent intramol. C(sp2)-H/C(sp3)-H cross-dehydrogenative coupling in the presence of Ir/(S)-DTBM-SEGPHOS catalyst. The reaction proceeded enantioselectively to afford 3-methyl-3-silyloxy-2,3-dihydrobenzfurans I [R = H, 5-Me, 5-Bn, etc.] with up to 99% ee. In the experiment, the researchers used many compounds, for example, Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1Electric Literature of C8H16Cl2Ir2).
Chlorobis(ethylene)iridium(I) dimer (cas: 39722-81-1) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen.While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available. Alkyl chlorides readily undergo attack by nucleophiles.Electric Literature of C8H16Cl2Ir2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics