Catalytic Asymmetric Aza-Friedel-Crafts-Type Reaction of Indoles with Isatin-Derived N-Cbz-Ketimines Using a Chiral Bis(Imidazolidine)-Containing NCN-Pincer Palladium Catalyst.
Takayoshi AraiKensuke ArasekiJunki KakinoPublished in: Organic letters (2019)
A chiral bis(imidazolidine)-containing NCN-pincer palladium complex (tBu-PhBidine-Pd-OTf) was an efficient catalyst for the aza-Friedel-Crafts-type reaction of 1H-indoles with isatin-derived N-Cbz-ketimines to give chiral 3-aminobisindole compounds having differently oxidized indole units with high enantioselectivities.