[3 + 2] Cycloaddition/Oxidative Aromatization Sequence via Photoredox Catalysis: One-Pot Synthesis of Oxazoles from 2<i>H</i>-Azirines and Aldehydes
作者:Ting-Ting Zeng、Jun Xuan、Wei Ding、Kuan Wang、Liang-Qiu Lu、Wen-Jing Xiao
DOI:10.1021/acs.orglett.5b01994
日期:2015.8.21
A novel [3 + 2] cycloaddition/oxidative aromatization sequence via visible light-induced photoredox catalysis is disclosed. It provides a general synthetic route to 2,4,5-trisubstituted oxazoles from easily accessible 2H-azirines and aldehydes under mild reaction conditions. The potential of this strategy was further demonstrated by the rapid synthesis of a cyclooxygenase-2 inhibitor as well as the
公开了经由可见光诱导的光氧化还原催化的新颖的[3 + 2]环加成/氧化芳构化序列。它提供了在温和的反应条件下从易于获得的2 H-叠氮基和醛合成2,4,5-三取代的恶唑的一般合成路线。快速合成环氧合酶2抑制剂以及成功使用缺电子的烯烃和亚胺作为反应伙伴,进一步证明了该策略的潜力。