Rh(III)-Catalyzed ortho-C–H amidation of ketones and aldehydes under cooperative metal organocatalysis has been utilized for synthesizing various ortho-amidocarbonyl analogs, and the reaction for the aldehyde proceeds at ambient temperature. The aniline derivative 3,5-bis(trifluoromethyl)aniline promotes the amidation reaction via a transient imine directing group. The efficient amidation agent is
Weakly Coordinating, Ketone-Directed (η<sup>5</sup>
-Pentamethylcyclopentadienyl)cobalt(III)- and (η<sup>5</sup>
-Pentamethylcyclopentadienyl)rhodium(III)-Catalyzed C−H Amidation of Arenes: A Route to Acridone Alkaloids
作者:Sourav Sekhar Bera、Md Raja Sk、Modhu Sudan Maji
DOI:10.1002/chem.201805376
日期:2019.2.1
monoamidation of aromatic ketones, chalcone, carbazole, and benzophenones was achieved by employing high‐valent cobalt and rhodium catalysis to access numerous biologically important molecular building blocks. This amidation proceeded smoothly with a variety of ketones and several amidating partners. The application of the products in the synthesis of various heterocycles, including acridones, indoles, quinoline
A Mild, One-Pot Synthesis of 4-Quinolones via Sequential Pd-Catalyzed Amidation and Base-Promoted Cyclization
作者:Jinkun Huang、Ying Chen、Anthony O. King、Mina Dilmeghani、Robert D. Larsen、Margaret M. Faul
DOI:10.1021/ol800837z
日期:2008.6.1
A mild, one-pot synthesis of 4-quinolones is described. Under the optimal conditions, a variety of 2-substituted 4-quinolones were synthesized via sequential palladium-catalyzed amidation of 2'-bromoacetophenones followed by base-promoted intramolecular cyclization.