Ni(0)/NHC-catalyzed amination of N-heteroaryl methyl ethers through the cleavage of carbon‒oxygen bonds
摘要:
Ni(0)/NHC-based catalyst system can promote the amination of N-heteroaryl methyl ethers via the cleavage of normally unreactive carbon oxygen bonds. Electron-deficient N-heteroarenes including pyridine, quinoline, isoquinoline, and quinoxaline undergo amination to afford aminopyridine and related heteroarenes, which constitute an important class of compounds. (C)2012 Elsevier Ltd. All rights reserved.
Herein, we report a commercially available natural saponin acting as a surfactant and serving as a micellar catalyst, enabling Suzuki–Miyaura cross-coupling effectively with highly challenging heteroaromatic substrates in water at room temperature.
Ni(0)/NHC-based catalyst system can promote the amination of N-heteroaryl methyl ethers via the cleavage of normally unreactive carbon oxygen bonds. Electron-deficient N-heteroarenes including pyridine, quinoline, isoquinoline, and quinoxaline undergo amination to afford aminopyridine and related heteroarenes, which constitute an important class of compounds. (C)2012 Elsevier Ltd. All rights reserved.