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Rose Bengal Catalyzed Coupling of 1, 2 ‐ Dicarbonyls and Phenylene 1, 2 ‐Diamines: Visible‐Light Mediated Synthesis of Quinoxalines
Author(s) -
Jaiswal Deepali,
Tiwari Jyoti,
Singh Shailesh,
Sharma Amit Kumar,
Singh Jaya,
Singh Jagdamba
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902080
Subject(s) - quinoxaline , photoredox catalysis , catalysis , rose bengal , chemistry , phenylene , visible spectrum , combinatorial chemistry , photochemistry , atom economy , medicinal chemistry , polymer chemistry , organic chemistry , materials science , polymer , photocatalysis , optoelectronics
A new approach for the formation of quinoxaline derivatives (indolo [2, 3‐b] quinoxaline or 2, 3‐Diphenyl‐quinoxaline derivatives) from several phenylene 1, 2‐diamines and 1, 2‐dicarbonyls has been developed by utilizing Rose Bengal as an organo‐ photoredox catalyst. The reported method focuses on the utilization of visible light photoredox catalysis for the formation of C−N bond in quinoxalines via radical chemistry. The developed strategy is simple, mild, exhibits excellent atom economy and is more viable toward the synthesis of biologically interesting quinoxaline frame work without the involvement of any transition metal or strong oxidant.