A CuBr-mediated aerobic reaction of 2-alkynylbenzaldehydes and primary amines: synthesis of 4-bromoisoquinolones
作者:Pei Chui Too、Shunsuke Chiba
DOI:10.1039/c2cc33426g
日期:——
A method for synthesis of 4-bromoisoquinolones has been developed starting from 2-alkynylbenzaldehydes and primary amines mediated by CuBr under an O2 atmosphere, where CuBr plays multiple roles to facilitate the present reactions.
A new, selective method for the synthesis of 4-haloisoquinolines and 3-haloindoles is presented by the halopalladation cyclizations of alkynes with azides. In the presence of PdX2 (X = Br, Cl) and halide sources, a variety of 2-alkynylbenzylazides or 2-alkynyl aryl azides smoothly underwent the halopalladation cyclization reaction to afford the corresponding 3-substituted 4-haloisoquinolines and