Regioselective Suzuki–Miyaura cross-coupling reactions of the bis(triflate) of 4,7-dihydroxycoumarin
作者:Zien Khaddour、Omer A. Akrawi、Ali S. Suleiman、Tamás Patonay、Alexander Villinger、Peter Langer
DOI:10.1016/j.tetlet.2014.01.148
日期:2014.8
Arylated coumarins were prepared by site-selective Suzuki-Miyaura cross-coupling reaction of the bis(triflate) of 4,7-dihydroxycoumarin. The reactions proceeded by initial attack to the sterically more hindered position, due to electronic reasons. (C) 2014 Elsevier Ltd. All rights reserved.