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Visible‐Light‐Driven Intermolecular [2+2] Cycloadditions between Coumarin‐3‐Carboxylates and Acrylamide Analogs
Author(s) -
Liu Qiang,
Zhu FuPing,
Jin XiaoLing,
Wang XiaoJu,
Chen Han,
Wu LiZhu
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201501176
Subject(s) - coumarin , intermolecular force , acrylamide , chemistry , photochemistry , organic chemistry , molecule , polymer , copolymer
This paper reports a room temperature visible‐light‐driven protocol for the intermolecular [2+2] cycloadditions between coumarin‐3‐carboxylates and acrylamides analogs by an energy‐transfer process. Using an iridium complex FIrPic as a photosensitizer and a 3 W blue LED as a light source, an array of cyclobutabenzocypyranones were prepared in moderate to excellent yields.