Nature CommunicationsCatalytic asymmetric formal nucleophilic C2-substitution of indoles via C2-umpolung toward 2,3’-bisindole atropisomersCong-Hui GaoXian-Yang YuBo-Xuan YaoHao-Lei YuShao-fei NiWei TanFeng Shi2026-06-12Full textDOI https://doi.org/10.1038/s41467-026-74186-7