Gold‐catalyzed Intermolecular Oxidations of 2‐Ketonyl‐1‐ethynyl Benzenes with N‐Hydoxyanilines to Yield 2‐Aminoindenones via Gold Carbene Intermediates
作者:Bhanudas Dattatray Mokar、Deepak B. Huple、Rai‐Shung Liu
DOI:10.1002/anie.201606467
日期:2016.9.19
Gold‐catalyzed oxidations of 2‐ketonyl‐1‐ethynyl benzenes with N‐hydroxyanilines yield 2‐aminoindenone derivatives efficiently. Experimental data suggests that this process involves an α‐oxo gold carbene intermediate, generated from the attack of N‐hydroxyaniline on furylgold carbene intermediate, rather than the typical attack of oxidants on π‐alkynes.
金催化的2-酮基-1-乙炔基苯与N-羟基苯胺的氧化反应可高效地生成2-氨基茚满酮衍生物。实验数据表明,该过程涉及α-氧代金卡宾中间体,该中间体是由N-羟基苯胺对呋喃金卡宾中间体的攻击所产生的,而不是氧化剂对π-炔烃的典型攻击。