Heteropolyacid-Catalyzed Phosphorylation of Secondary Aromatic Alcohols with H-Phosphine Oxides in DMC: A Simple Protocol for C–P Bond Formation
作者:Hongfeng Zhuang、Peng Wan、Chengxia Miao、Yang Yang、Shuyan Liang、Feng Han
DOI:10.1021/acs.joc.3c02409
日期:2024.2.16
We successfully achieved the phosphorylation of secondary aromatic alcohols with H-phosphine oxides (less developed system) using phosphotungstic acid as a catalyst in dimethyl carbonate. The system was simple and environmentally friendly and showed better activity than traditional Lewis or Brønsted acids such as FeCl3, p-TsOH·H2O, etc., generating up to a 97% isolated yield. Control experiments indicated
我们在碳酸二甲酯中使用磷钨酸作为催化剂,成功地实现了仲芳香醇与H-氧化膦(尚未开发的系统)的磷酸化。该体系简单、环保,比传统的路易斯酸或布朗斯台德酸如FeCl 3 、 p -TsOH·H 2 O等表现出更好的活性,分离收率高达97%。对照实验表明该反应不是通过自由基途径发生的,醚和碳正离子是该途径的关键中间体。