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Pyrazinium Salts as Efficient Organocatalysts of Mild Oxidations with Hydrogen Peroxide
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SYSNO ASEP 0359406 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Pyrazinium Salts as Efficient Organocatalysts of Mild Oxidations with Hydrogen Peroxide Author(s) Ménová, Petra (UOCHB-X) RID
Kafka, František (UOCHB-X)
Dvořáková, H. (CZ)
Gunnoo, S. (CZ)
Šanda, Miloslav (UOCHB-X)
Cibulka, R. (CZ)Number of authors 6 Source Title Advanced Synthesis & Catalysis. - : Wiley - ISSN 1615-4150
Roč. 353, č. 6 (2011), s. 865-870Number of pages 6 s. Language eng - English Country DE - Germany Keywords Baeyer-Villiger oxidation ; organocatalysis ; peroxides ; pyrazinium salts ; sulfoxidation Subject RIV CC - Organic Chemistry R&D Projects GA203/07/1246 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40550506 - UOCHB-X (2005-2011) UT WOS 000290613800010 DOI 10.1002/adsc.201000906 Annotation A series of 3-substituted pyrazinium tetrafluoroborates was prepared as simple analogues of flavinium salts which are efficient organocatalysts for oxidations with hydrogen peroxide. It was shown that pyrazinium derivatives with an electronwithdrawing substituent catalyze mild oxidations of sulfides to sulfoxides and Baeyer–Villiger oxidations in a similar way to flavinium catalysts. A proposed mechanism for the catalysis is based on the formation of pyrazine hydroperoxide which is the agent oxidizing the substrate. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Year of Publishing 2012
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