title: Iron-mediated carboarylation/cyclization of propargylanilines with acetals: a concise route to indeno[2,1-c]quinolines.
abstract: FeCl3- and FeBr3-mediated tandem carboarylation/cyclization of propargylanilines with diethyl benzaldehyde acetals furnished the tetracyclic core of indeno[2,1-c]quinolines. 5-Tosyl-6,7-dihydro-5H-indeno[2,1-c]quinoline and 7H-indeno[2,1-c]quinoline derivatives were obtained in good to excellent yields, respectively, by tuning the FeX3 loadings and/or reaction temperatures.
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, P. R. China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Yang
authors.forename: Tongyu
authors.initials: T
authors.lastname: Xu
authors.forename: Zhengkun
authors.initials: Z
authors.lastname: Yu