Copper-Assisted Palladium(II)-Catalyzed Direct Arylation of Cyclic Enaminones with Arylboronic Acids
作者:Yong Wook Kim、Micah J. Niphakis、Gunda I. Georg
DOI:10.1021/jo301531k
日期:2012.11.2
Described herein is a palladium(II)-catalyzed direct arylation of cyclic enaminones with arylboronicacids. The versatility of this method is that both electron-rich and electron-poor boronic acids can be coupled in high yields. A mixture of two Cu(II) additives was crucial for efficient cross-coupling. The role of each Cu(II) reagent appears to be distinct and complementary serving to assist catalyst
Boron–Heck Reaction of Cyclic Enaminones: Regioselective Direct Arylation via Oxidative Palladium(II) Catalysis
作者:Yong Wook Kim、Gunda I. Georg
DOI:10.1021/ol500105d
日期:2014.3.21
An oxidative boron Heck reaction of cyclic enaminones with arylboronic acids is reported. This protocol provides a regioselective arylation it the C6 position of cyclic enaminones. When an N-carbamylated cyclic enaminone was employed, a switch to a conjugate addition reaction occurred in the presence of acid.