A new “one pot” preparation of 2-n,n-dialkylamino-1,3-benzoxazines and naphth[ 1,2-e][ 1,3]oxazines from corresponding ortho hydroxynitriles and phosgeniminium salts
Lewis Acid‐Mediated Cyanation of Phenols Using
<i>N</i>
‐Cyano‐
<i>N</i>
‐phenyl‐
<i>p‐</i>
toluenesulfonamide
作者:Wu Zhang、Tao Li、Qingli Wang、Wanxiang Zhao
DOI:10.1002/adsc.201900813
日期:2019.11.5
Lewisacid‐mediated cyanation of phenol derivatives with N‐cyano‐N‐phenyl‐p‐toluenesulfonamide (NCTS) has been developed. The reaction proceeded efficiently with high regioselectivity to produce aromatic nitriles in moderate to excellent yields, which provides a direct and practical access to valuable products.