A Straightforward Methodology for the Introduction of Aryl and Vinyl Substituents in the 5 or 7 Position of 8-Hydroxyquinoline

A straightforward and general procedure for the introduction of aryl and vinyl substituents in the 5 or 7 position of 8-hydroxyquinoline has been developed. The methodology presented is based upon the Suzuki cross-coupling reaction of aryl or vinyl halides with 5-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)quinolin- 8-ol or 7-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)quinolin-8- ol, respectively, that have been obtained regioselectively starting from 8-hydroxyquinoline