Ferrocenylindium Reagents in Palladium-Catalyzed Cross-Coupling Reactions: Asymmetric Synthesis of Planar Chiral 2-Aryl Oxazolyl and Sulfinyl Ferrocenes
作者:Mauro Mato、Cristina Pérez-Caaveiro、Luis A. Sarandeses、José Pérez Sestelo
DOI:10.1002/adsc.201601397
日期:2017.4.17
of ferrocenylindium species and palladium‐catalyzed cross‐coupling reactions for the synthesis of monosubstituted and planar chiral 1,2‐disubstituted ferrocenes is described. Triferrocenylindium reagents (Fc3In) are efficiently prepared in a one‐pot procedure from ferrocenes by lithiation and transmetallation to indium using InCl3. The palladium‐catalyzed cross‐coupling reactions of Fc3In (40 mol%)
Palladium(0)-Catalyzed Asymmetric C–H Alkenylation for Efficient Synthesis of Planar Chiral Ferrocenes
作者:De-Wei Gao、Yiting Gu、Shao-Bo Wang、Qing Gu、Shu-Li You
DOI:10.1021/acs.organomet.6b00569
日期:2016.9.26
Pd(0)-catalyzed intramolecular C-H alkenylation was achieved with excellent yields and: enantioselectivity for the construction of planar chiral ferrocenes. It is compatible with a broad range of substrates and various functional groups. Notably, the enantioselective and diastereoselective, synthesis of planar chiral ferrocenes was realized by cascade C-H arylation and alkenylation reaction for the first time. Additionally, the product was easily converted into a N,O-bidentate ligand, showing promising chiral induction in asymmetric alkynylation of 1-naphthaldehyde.