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
Microwave-assisted Suzuki–Miyaura couplings on α-iodoenaminones
作者:Xin Wang、Brandon J. Turunen、Matthew W. Leighty、Gunda I. Georg
DOI:10.1016/j.tetlet.2007.10.078
日期:2007.12
A systematic study of alpha-iodination and subsequent Suzuki-Miyaura couplings between non-attenuated enaminones and a wide range of aromatic boronic acids is reported. The microwave-assisted variant of this transformation furnished the alpha-arylenaminones in significantly shorter reaction times and slightly improved yields as compared to conventional heating. (C) 2007 Elsevier Ltd. All rights reserved.
Iida, Hideo; Watanabe, Yohya; Kibayashi, Chihiro, Journal of the Chemical Society. Perkin transactions I, 1985, p. 261 - 266
作者:Iida, Hideo、Watanabe, Yohya、Kibayashi, Chihiro
DOI:——
日期:——
Palladium(II)-Catalyzed Direct Arylation of Enaminones Using Organotrifluoroborates
作者:Haibo Ge、Micah J. Niphakis、Gunda I. Georg
DOI:10.1021/ja710221c
日期:2008.3.1
A Pd(II)-catalyzed reaction for the direct aryation of cyclic enaminones is reported. The reactivity of electron-rich, electron-poor, and sterically encumbered organotrifluoroborates was investigated. This reaction represents a unique use for organotrifluoroborates as coupling partners and discloses the utility of enaminones for direct-functionalization reactions. It provides immediate access to arylpiperidine, indolizidine, and quinolizidine scaffolds from the corresponding mono- and bicyclic, unattenuated enaminones.