Enantioselective C(sp3 )-H Amidation of Thioamides Catalyzed by a CobaltIII /Chiral Carboxylic Acid Hybrid System.
Seiya FukagawaYoshimi KatoRyo TanakaMasahiro KojimaTatsuhiko YoshinoShigeki MatsunagaPublished in: Angewandte Chemie (International ed. in English) (2018)
Recent advances in Cpx MIII catalysis (M=Co, Rh, Ir) have enabled a variety of enantioselective C(sp2 )-H functionalization reactions, but enantioselective C(sp3 )-H functionalization is still largely unexplored. We describe an asymmetric C(sp3 )-H amidation of thioamides using an achiral CoIII /chiral carboxylic acid hybrid catalytic system, which provides easy and straightforward access to chiral β-amino thiocarbonyl and β-amino carbonyl building blocks with a quaternary carbon stereocenter.