Visible-light-enabled denitrative carboxylation of β-nitrostyrenes: a direct photocatalytic approach to cinnamic acids
作者:Shubhangi Tripathi、Lal Dhar S. Yadav
DOI:10.1039/c7nj04578f
日期:——
The first workable application of β-nitrostyrenes and CBr4 as coupling partners for a highly stereoselective synthesis of (E)-cinnamic acids under visible light photoredox catalysis is reported. The reaction involves a radical denitrative tribromomethylation/hydrolysis cascade to afford (E)-cinnamic acids in excellent yields at room temperature in a one-pot procedure. Moreover, the implementation of
据报道,在可见光光氧化还原催化下,β-硝基苯乙烯和CBr 4作为偶联伴侣在(E)-肉桂酸的高度立体选择性合成中的首次可行应用。该反应涉及自由基脱氮三溴甲基化/水解级联反应,以一锅法在室温下以优异的产率得到(E)-肉桂酸。此外,将可见光用作清洁且廉价的能源,并将CBr 4用作羧基的潜在来源,可使该方案与当今有机合成的情况相吻合。