Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 359, Issue 10, Pages 1752-1757Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201700071
Keywords
amine N-oxides; deoxygenation; molybdenum; microwave heating; N-hydroxybenzotriazoles
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Funding
- Ministerio de Economia y Competitividad (MINECO) [CTQ2013-48937-C2-1-P, CTQ2015-70371-REDT, CTQ2016-75023-C2-1-P]
- Junta de Castilla y Leon
- FEDER [BU076U16]
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A molybdenum-catalyzed deoxygenation of pyridine N-oxides and N-hydroxybenzotriazoles, as well as other azole N-oxides, has been developed using pinacol as an environmentally friendly oxo-acceptor. The only by-products are acetone and water making the process a convenient alternative to established protocols in terms of waste generation. The reaction is highly chemoselective and a variety of functional groups are tolerated. The processes are usually very clean allowing the isolation of the pure deoxygenated products after a simple extraction in most cases.
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