Journal
ORGANOMETALLICS
Volume 38, Issue 20, Pages 3921-3926Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.9b00407
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Funding
- JSPS KAKENHI [JP15H05802, JP18H04637, JP17K15417, JP19K16306]
- Asahi Glass Foundation
- Naito Foundation
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Enantioselective C-H functionalization reactions using trivalent group 9 metals (Co, Rh, Ir) have been investigated mainly on the basis of the development of well-designed chiral cyclopentadienyl (Cp) ligands. Although it has recently been demonstrated that chiral carboxylic acids combined with achiral Cp-type ligands can enable highly enantioselective C-H functionalization reactions, the structural diversity of the applied chiral acids remains limited. Here, we report that chiral 2-aryl ferrocene carboxylic acids, which are easily obtained from diastereoselective ortho lithiation and Suzuki-Miyaura coupling, can serve as external chiral sources for the Cp*Co-III-catalyzed enantioselective C(sp(3))-H amidation of alpha-aryl thioamides using dioxazolones.
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