Photoredox-Catalyzed Cascade Radical Cyclization of Ester Arylpropiolates with CF3SO2Cl To Construct 3-Trifluoromethyl Coumarin Derivatives
01 natural sciences
0104 chemical sciences
DOI:
10.1021/acs.joc.8b00581
Publication Date:
2018-06-07T19:13:53Z
AUTHORS (9)
ABSTRACT
We report a highly efficient method to construct 3-trifluoromethyl coumarins using CF3SO2Cl as the trifluoromethyl radical source with ester 3-arylpropiolates. The reaction incorporated cascade cyclization/dearomatization/ester migration/oxidization/rearomatization process afford various under visible light irradiation in good excellent yields.
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