Domino-Fluorination–Protodefluorination Enables Decarboxylative Cross-Coupling of α-Oxocarboxylic Acids with Styrene via Photoredox Catalysis
作者:Muliang Zhang、Junwei Xi、Rehanguli Ruzi、Nan Li、Zhongkai Wu、Weipeng Li、Chengjian Zhu
DOI:10.1021/acs.joc.7b01054
日期:2017.9.15
a carbon-centered radical intermediate, which will overcome side reactions during the styrene radical functionalization process. Experimental studies have provided evidence indicating a domino-fluorination–protodefluorination pathway with α-keto acid initiating the photoredox cycle. The present catalytic protocol also affords a novel approach for the construction of α,β-unsaturated ketones under mild
通过光氧化还原催化,已经开发出α-酮酸与苯乙烯的多米诺氟化-原脱氟脱羧交叉偶联。该策略的关键部分是通过捕获以碳为中心的自由基中间体形成碳-氟(C-F)键,这将克服苯乙烯自由基官能化过程中的副反应。实验研究提供了证据,表明具有α-酮酸的多米诺氟化-原脱氟途径可引发光氧化还原循环。本催化方案还提供了在温和条件下构建α,β-不饱和酮的新方法。