Catalytic and Highly Regioselective Cross-Coupling of Aromatic C−H Substrates
作者:Kami L. Hull、Melanie S. Sanford
DOI:10.1021/ja074395z
日期:2007.10.1
This communication describes a new Pd-catalyzed reaction for the highly chemo- and regioselective oxidative cross-coupling of aromatic C-H bonds. This transformation is proposed to proceed via two discrete C-H activation steps whose selectivities are predominantly controlled by proximity to a ligand (first C-H activation) or by the steric environment around the arene C-H bond (second C-H activation). Furthermore, the selectivity of the second C-H activation reaction can be controlled by tuning the ligand environment around the Pd center.
Synthesis of sterically encumbered C10-arylated benzo[h]quinolines using ortho-substituted aryl boronic acids
作者:Marko Weimar、Matthew J. Fuchter
DOI:10.1039/c2ob26806j
日期:——
The challenging coupling of 10-halobenzo[h]quinolines with ortho-substituted aryl boronic acids has been achieved using Pd(OAc)2/P(O)Ph3 as the catalytic system. High yields were obtained for diversely functionalised substrates under mild reaction conditions.