Palladium-Catalyzed Decarboxylative Couplings of 2-(2-Azaaryl)acetates with Aryl Halides and Triflates
作者:Rui Shang、Zhi-Wei Yang、Yan Wang、Song-Lin Zhang、Lei Liu
DOI:10.1021/ja107103b
日期:2010.10.20
Pd-catalyzed decarboxylative cross-couplings of 2-(2-azaaryl)acetates with arylhalides and triflates have been discovered. This reaction is potentially useful for the synthesis of some functionalized pyridines, quinolines, pyrazines, benzoxazoles, and benzothiazoles. Theoretical analysis shows that the nitrogen atom at the 2-position of the heteroaromatics directly coordinates to Pd(II) in the decarboxylation
One-Pot Directing Group Formation/C−H Bond Functionalization<i>via</i>Copper(I) and Ruthenium(II) Catalysis
作者:Christian Bruneau、Rafael Gramage-Doria
DOI:10.1002/adsc.201600735
日期:2016.12.7
A copper(I)‐catalyzed oxidation leading to the formation of 2‐pyridyl ketone directing groups has been efficiently coupled with a ruthenium(II)‐catalyzed C(sp2)−H bond arylation transformation without performing any intermediate work‐up. This sustainable approach was further extended to sequential three‐step transition metal‐catalyzed transformations in which up to four new bonds (C–O, C–C, C–H and