Pyrazine Radical Cations as a Catalyst for the Aerobic Oxidation of Amines

Autor:	Esteban Mejía, Rok Brisar, Dirk Hollmann
Rok vydání:	2017
Předmět:	Pyrazine 010405 organic chemistry Organic Chemistry chemistry.chemical_element 010402 general chemistry Photochemistry 01 natural sciences Oxygen 0104 chemical sciences law.invention Catalysis Solvent chemistry.chemical_compound Radical ion chemistry law Reagent Organocatalysis Physical and Theoretical Chemistry Electron paramagnetic resonance
Zdroj:	European Journal of Organic Chemistry. 2017:5391-5398
ISSN:	1434-193X
Popis:	An efficient and green synthetic method for the preparation of N,N-disubstituted tetramethylpyrazinium radical cations was developed, which does not require any solvent or strong alkylating agents. The investigation by UV/Vis and electron paramagnetic resonance (EPR) spectroscopy proved the stability of the prepared radical cation. Moreover, it was shown for the first time that the prepared N,N-disubstituted tetramethylpyrazine can act as a powerful metal-free catalyst for the selective oxidative homocoupling of amines to the corresponding imines under solvent-free conditions. Furthermore, oxygen or even air can be employed as an efficient oxidative reagent.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::32e79a500c6e560ff7f85b84d1ad334e https://doi.org/10.1002/ejoc.201700949 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.