Palladium-Catalyzed Intramolecular Asymmetric C–H Functionalization/Cyclization Reaction of Metallocenes: An Efficient Approach toward the Synthesis of Planar Chiral Metallocene Compounds
synthesis of planar chiral metallocene compounds is reported. The reaction stereoselectively functionalized one of the ortho C-H bonds of Cp rings by intramolecular cyclization to form indenone derivatives in high yields with excellent enantioselectivity. The mild set of reaction conditions allowed a wide variety of chiral metallocene compounds to be synthesized with broad functional group tolerance. The
Synthesis of ferrocene indanone derivatives via trinuclear N -heterocyclic carbene palladium(II)-catalyzed cyclocarbonylation of o -bromoarylferrocene
作者:Tao Wang、Renjie Wang、Wanli Wang、An'an Zhang、Lantao Liu
DOI:10.1016/j.jorganchem.2018.01.016
日期:2018.3
A new route to ferrocene indanone derivatives has been developed via the trinuclear N-heterocyclic carbene palladium(II)-catalyzed carbonylative C-C bond formation. Under a CO atmosphere, using o-bromoarylferrocene as substrate, this reaction proceeded smoothly to give the desired products in moderate to excellent yields within hours.