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Metal-Free Oxidative Coupling: Xanthone Formation via Direct Annulation of 2-Aryloxybenzaldehyde using Tetrabutylammonium Bromide as a Promoter in Aqueous Medium.
- Source :
-
Advanced Synthesis & Catalysis . Aug2013, Vol. 355 Issue 11/12, p2191-2196. 6p. - Publication Year :
- 2013
-
Abstract
- A metal-free intramolecular annulation of 2-aryloxybenzaldehydes to xanthones is disclosed, which proceeds through the direct oxidative coupling of an aldehyde CH bond and aromatic CH bonds using tetrabutylammonium bromide (TBAB) as a promoter in aqueous medium. This strategy works smoothly in the presence of both electron-donating and electron-withdrawing groups, and displays good tolerance towards catalytically reactive substituents, thus promising further functionalizations of xanthone products. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16154150
- Volume :
- 355
- Issue :
- 11/12
- Database :
- Academic Search Index
- Journal :
- Advanced Synthesis & Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 89865496
- Full Text :
- https://doi.org/10.1002/adsc.201300488