Superior Performance of NHPI Cocatalyst in the Autoxidation of Methylbenzenes under Solvent-Free Phase Transfer Conditions

Autor:	Nimer Taha, Yoel Sasson
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Autoxidation Vesicle Organic Chemistry Salt (chemistry) Catalysis Solvent chemistry.chemical_compound chemistry Reagent Phase (matter) Polymer chemistry Organic chemistry Ammonium Physical and Theoretical Chemistry
Zdroj:	Organic Process Research & Development. 14:701-704
ISSN:	1520-586X 1083-6160
Popis:	The novel three-way catalytic system Co(II)/QX/NHPI (QX = lipophilic ammonium salt) is presented as a highly potent promoter for the autoxidation of methylbenzenes to benzoic acids in the absence of a solvent. The key feature of the scheme is the phase transfer of Co(II) and NHPI into the organic phase partially via a hydrogen-bond mechanism. With certain QXs the latter interaction also stabilizes NHPI and prevents its degradation (which is a crucial drawback of this reagent). Ammonium salts that have a tendency to self-assemble in giant multilamellar vesicle (onion) structures, such as DDAB, are particularly effective in this system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::957922260121e9d4855658d77c00875a https://doi.org/10.1021/op100027s Zobrazit plný text záznamu