期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2020, 期 42, 页码 6653-6660出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202001219
关键词
Imidazoheterocycles; Sulfones; Sulfur dioxide; Photoredox catalysis; Diaryliodonium salts
资金
- Ministere de l'Enseignement Superieur et de la Recherche
The first entirely visible-light photoredox catalyzed sulfonylation of imidazoheterocycles has been developed. This transformation demonstrates an efficient C-H functionalization for the straightforward synthesis of novel C-3 sulfonylated imidazoheterocycles from various imidazopyridines and diaryliodonium salts with different electronic and steric properties and easy to handle DABCO-bis(sulfur dioxide). The reaction proceeds in moderate to good yields under mild conditions at room temperature using the inexpensive organophotocatalyst EosinY center dot Na-2 and shows a high functional group tolerance (37 examples).
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