Domino Radical Addition/Oxidation Sequence with Photocatalysis: One-Pot Synthesis of Polysubstituted Furans from α-Chloro-Alkyl Ketones and Styrenes
作者:Shuang Wang、Wen-Liang Jia、Lin Wang、Qiang Liu、Li-Zhu Wu
DOI:10.1002/chem.201602053
日期:2016.9.19
A new domino reaction has been developed that allows the combination of styrenes and α‐alkyl ketone radicals to afford a wide array of polysubstituted furans in good to excellent yields under mild and simple reaction conditions. The key to success of this novel protocol is the use of photocatalyst fac‐Ir(ppy)3 and oxidant K2S2O8. Mechanistic studies by a radical scavenger and photoluminescence quenching
已开发出一种新的多米诺反应,该反应允许苯乙烯和α-烷基酮自由基的组合在温和简单的反应条件下以良好或优异的收率提供各种各样的多取代呋喃。该新协议成功的关键是使用光催化剂fac ‐Ir(ppy)3和氧化剂K 2 S 2 O 8。通过自由基清除剂和光致发光猝灭的机理研究表明,自由基加成/氧化途径是可行的。