Selective Heck reaction of electron-rich aryl bromides with cyclic alkenones
摘要:
A simple and efficient protocol for the Heck reaction of cyclic alkenones with electron-rich aryl bromides has been developed. A ligand combination of X-Phos and tri-tert-butylphosphonium hydrogen tetrafluorborate in the presence of Pd(PPh3)(2)Cl-2 and Na2CO3 in DMSO was found to be efficient and selective for electron-rich aryl bromides with high substrate scope for cyclic alkenones. (C) 2015 Elsevier Ltd. All rights reserved.
Selective Heck reaction of electron-rich aryl bromides with cyclic alkenones
作者:Tarak Nath Gowala、Jagadish Pabba
DOI:10.1016/j.tetlet.2015.02.045
日期:2015.4
A simple and efficient protocol for the Heck reaction of cyclic alkenones with electron-rich aryl bromides has been developed. A ligand combination of X-Phos and tri-tert-butylphosphonium hydrogen tetrafluorborate in the presence of Pd(PPh3)(2)Cl-2 and Na2CO3 in DMSO was found to be efficient and selective for electron-rich aryl bromides with high substrate scope for cyclic alkenones. (C) 2015 Elsevier Ltd. All rights reserved.