Tandem-type Pd(ii)-catalyzed oxidative Heck reaction/intramolecular C–H amidation sequence: a novel route to 4-aryl-2-quinolinones
作者:Kiyofumi Inamoto、Junpei Kawasaki、Kou Hiroya、Yoshinori Kondo、Takayuki Doi
DOI:10.1039/c2cc30600j
日期:——
A novel catalytic method for synthesizing 4-aryl-2-quinolinones is reported. The process involves two mechanistically independent, sequential Pd(II)-catalyzed reactions--the oxidative Heck reaction and the intramolecular C-H amidation--both of which smoothly proceed in the presence of a single catalytic system in a one-pot manner.
Pd-catalyzed α-olefinic C-H activation of simple α,β-unsaturated olefins has been developed. 4-imino-β-lactam derivatives were readily synthesized via activation of α-olefinic C-H bonds with excellent cis stereoselectivity. A wide range of heterocycles at the β-position are compatible with this reaction. The product of 4-imino-β-lactam derivatives can be readily converted to 2-aminoquinoline which