@article{oai:nagoya.repo.nii.ac.jp:02001390, author = {Uyanik, Muhammet and Tanaka, Hiroki and Ishihara, Kazuaki}, issue = {1}, journal = {Asian Journal of Organic Chemistry}, month = {Jan}, note = {We report a chemoselective tandem oxidative cyclization/aromatization of indole derivatives tethered to aniline sulfonamides using catalytic amount of tetrabutylammonium iodide in the presence of tert-butyl hydroperoxide (TBHP) as an oxidant under nearly neutral conditions at room temperature. The corresponding indolo[2,3-b]quinolines were obtained as sulfonate salts, which could be easily isolated in analytically pure form via only a simple filtration of the crude reaction mixture. The natural product quinindoline could be easily obtained after basic work-up of the sulfonate salt. Control experiments revealed that both ionic and radical active species could be generated in situ under mild conditions for the corresponding oxidative transformations to proceed in a chemoselective manner.}, pages = {164--169}, title = {I^+/TBHP Catalysis For Tandem Oxidative Cyclization To Indolo[2,3-b]quinolines}, volume = {10}, year = {2021} }