Copper(<scp>ii</scp>)-mediated, carbon degradation-based amidation of phenylacetic acids toward <i>N</i>-substituted benzamides
作者:Leiling Deng、Bin Huang、Yunyun Liu
DOI:10.1039/c8ob00064f
日期:——
The unprecedented synthesis of N-aryl substituted benzamides via the assembly of primary amines and phenylacetic acids has been developed in the presence of copper(II) acetate. This tandem transformation involving carbon–carbon bond cleavage provides a complementary tool with particular application in the synthesis of secondary benzamides.
compound 1 with a novel scaffold by high-throughputscreening in our in-house library. After a comprehensive structure–activity relationship study, the optimal compound 24 was discovered as an efficient and highlyselective hCES2 inhibitor (hCES2: IC50 = 6.72 μM; hCES1: IC50 > 100 μM). Further enzyme kinetics study indicated that compound 24 is a reversible inhibitor of hCES2 with competitive inhibition
An operationally simple method with 100% atom economy has been developed for the synthesis of various N-(quinolin-2-yl)amides via the TsOH·H2O-mediated N-amidation of quinoline N-oxides using inexpensive and commercially available nitriles as the amidation reagents. Mechanistic exploration suggested that the reaction probably proceeds through an acid-assisted 1,3-dipolar cycloaddition and an N–O bond