Dioxygen-Promoted Regioselective Oxidative Heck Arylations of Electron-Rich Olefins with Arylboronic Acids
Murugaiah M. S. Andappan, Peter Nilsson, Henrik von Schenck and Mats Larhed*
*Organic Pharmaceutical Chemistry, Department of Medicinal Chemistry, BMC, Uppsala University, Box-574, SE-751 23 Uppsala, Sweden, Email: matsorgfarm.uu.se
M. M. S. Andappan, P. Nilsson, H. v. Schenck, M. Larhed, J. Org. Chem., 2004, 69, 5212-5218.
see article for more reactions
Arylations of electron-rich heteroatom-substituted olefins were performed with electron-rich arylboronic acids via palladium(II) catalysis. This mild protocol, which offers access to functionalized enamides, exploits oxygen gas for reoxidation and a stable 1,10-phenanthroline bidentate ligand to promote the palladium(II) regeneration and to control the regioselectivity.
see article for more examples
Heck Reaction, Microwave Synthesis, Oxygen, Alkenylation, Enamides