describe a general and efficient protocol for the synthesis of organophosphine compounds from phenols and phosphines (R2PH) via a metal-free C–O bond cleavage and C–P bond formation process. This approach exhibits broad substrate scope and excellent functional group tolerance. The synthetic utilities of this protocol were demonstrated by the synthesis of chiral ligands via the various transformations
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.