Ni- and Cu-Catalyzed Coupling Reactions Using 2-(4,5-Dihydro-1H-imidazo-2-yl)phenol as a Versatile Phosphine-Free Ligand
摘要:
We have disclosed 2-(4,5-dihydro-1H-imidazo-2-yl)phenol (1) worked efficiently as a ligand in Ni-catalyzed Suzuki-Miyaura coupling reactions and Cu-catalyzed N-cyclopropylation of indoles using cyclopropylboronic acid.
Copper-Mediated <i>N</i>-Cyclopropylation of Azoles, Amides, and Sulfonamides by Cyclopropylboronic Acid
作者:Sébastien Bénard、Luc Neuville、Jieping Zhu
DOI:10.1021/jo801033y
日期:2008.8.1
Reaction of azoles, amides, and sulfonamides in dichloroethane with readily available cyclopropylboronic acid in the presence of copper acetate and sodium carbonate afforded the N-cyclopropyl derivatives in good to excellent yields.