Suzuki-Miyaura Cross-Coupling of Benzylic Carbonates with Arylboronic Acids
Ryoichi Kuwano* and Masashi Yokogi
*Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, Email: rkuwasccmbox.nc.kyushu-u.ac.jp
R. Kuwano, M. Yokogi, Org. Lett., 2005, 7, 945-947.
DOI: 10.1021/ol050078q
Abstract
The palladium-catalyzed cross-coupling of various benzylic carbonates with arylboronic acids gave the corresponding diarylmethanes in high yields. The catalyst is generated in situ from [Pd(η3-C3H5)Cl]2 and 1,5-bis(diphenylphosphino)pentane (dpppe).
see article for more examples
proposed mechanism
R. Kuwano, Y. Kondo, T. Shirahama, Org. Lett., 2005, 7, 2973-2975.
Palladium-Catalyzed Nucleophilic Benzylic Substitutions of Benzylic Esters
R. Kuwano, Y. Kondo, Y. Matuyama, J. Am. Chem. Soc., 2003, 125, 12104-12105.
Key Words
ID: J54-Y2005-250