title: Taming gold(I)-counterion interplay in the de-aromatization of indoles with allenamides.
abstract: A careful interplay between the π electrophilicity of a cationic Au(I) center and the basicity of the corresponding counterion allowed for the chemo- and regioselective inter- as well as intramolecular de-aromatization of 2,3-disubstituted indoles with allenamides. The silver-free bifunctional Lewis acid/Brønsted base complex [{2,4-(tBu)2C6H3O}3PAuTFA] assisted the formation of a range of densely functionalized indolenines under mild conditions.
authors.affiliation: Department of Chemistry "G. Ciamician", Alma Mater Studiorum - University of Bologna, Via Selmi 2, 40126 Bologna (Italy).
authors.forename: Minqiang
authors.initials: M
authors.lastname: Jia
authors.forename: Gianpiero
authors.initials: G
authors.lastname: Cera
authors.forename: Daniele
authors.initials: D
authors.lastname: Perrotta
authors.forename: Magda
authors.initials: M
authors.lastname: Monari
authors.forename: Marco
authors.initials: M
authors.lastname: Bandini
keywords: catalysis; de-aromatization; gold; indoles; regioselectivity