e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Tetrahedron
Synthesis of pyrido [2′, 1′: 2, 3] imidazo [4, 5-b] quinoline and pyrido [1′, 2′: 1, 2] imidazo [4, 5-b] quinoline and their benzo and aza analogs via tandem catalysis
... Tetrahedron. Volume 63, Issue 36, 3 September 2007, Pages 8954–8961. Cover image Cover image. Synthesis of pyrido[2′,1′:2,3]imidazo[4,5-b]quinoline and pyrido[1′,2′:1,2]imidazo[ 4,5-b]quinoline and their benzo and aza analogs via tandem catalysis. ...