Halopalladation Cyclization of Alkynes with Azides: Selective Synthesis of 4-Haloisoquinolines and 3-Haloindoles
作者:Jin-Heng Li、Hong-Ping Zhang、Shang-Ci Yu、Yun Liang、Peng Peng、Bo-Xiao Tang
DOI:10.1055/s-0030-1259722
日期:2011.4
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-alkynyl benzyl azides or 2-alkynyl aryl azides smoothly underwent the halopalladation cyclization reaction to afford the corresponding 3-substituted 4-haloisoquinolines and
通过炔烃与叠氮化物的卤钯化环化反应,提出了一种新的选择性合成 4-卤代异喹啉和 3-卤代吲哚的方法。在 PdX2 (X = Br, Cl) 和卤化物源存在下,各种 2-炔基苄基叠氮化物或 2-炔基芳基叠氮化物顺利进行卤代钯化环化反应,得到相应的 3-取代 4-卤代异喹啉和 2-取代3-卤代吲哚,产率适中。