Copper-Catalyzed Electrophilic Amination of Arylboronic Acids with Anthranils: An Access to N-Aryl-2-aminophenones
An efficient copper-catalyzed electrophilic amination strategy has been established for the rapid synthesis of N-aryl-2-aminophenones from readily available arylboronic acids/esters and anthranils. This protocol features good functional group tolerance, broad substrate scope, and operational simplicity. Moreover, a tandem C-H borylation and C-N coupling protocol has also been developed to transform simple arenes to the valuable N-aryl-2-aminophenones in one pot. Additionally, the synthetic potential of this methodology is further demonstrated by the synthesis of various useful N-heterocycles and derivatives.
Two new alkaloids, 1-formyl-3-methoxy-6-methylcarbazole 1 and 6,7-dimethoxy-1-hydroxy-3-methylcarbazole 2, have been isolated from the leaves of Murraya koenigii. Both the compounds have been identified by spectral as well as chemical evidences, and their structures confirmed by synthesis. Compound 2 is found to be active against Gram-positive and Gram-negative bacteria and fungi.
Chowdhury,Jha,Bhattacharyya,Mukherjee
p. 490 - 494
(2007/10/03)
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