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Metal‐Free Desulfonylation Reaction Through Visible‐Light Photoredox Catalysis
Author(s) -
Yang DengTao,
Meng QingYuan,
Zhong JianJi,
Xiang Ming,
Liu Qiang,
Wu LiZhu
Publication year - 2013
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201301105
Subject(s) - eosin y , photoredox catalysis , chemistry , photochemistry , quenching (fluorescence) , catalysis , photocatalysis , visible spectrum , eosin , salt (chemistry) , fluorescence , organic chemistry , staining , optoelectronics , medicine , physics , pathology , quantum mechanics
The desulfonylation of β‐arylketosulfones has been achieved in good to excellent yields by using 3‐W blue LEDs light, 1 mol‐% organic dye eosin Y bis(tetrabutylammonium salt) as photocatalyst, and diisopropylethylamine as reducing agent. Mechanistic studies demonstrate that oxidative quenching of the excited eosin Y by β‐arylketosulfones plays a crucial role in the present photoredox catalytic cycle.