Two poly(ethylene glycol)-supported TEMPO (PEG-TEMPO) has been successfully applied as soluble, recyclable catalysts in the chemoselective oxidation of primary and benzylic alcohols with molecular oxygen in the presence of Co(NO3)2 and Mn(NO3)2 as co-catalysts (Minisci's conditions). Under those conditions, secondary alcohols are also oxidized to ketones, although usually in lower yields. The insertion of a spacer between the PEG moiety and TEMPO has beneficial effects on both the activity and ease of recovery of the supported catalyst.
|Titolo:||Aerobic oxidation of alcohols to carbonyl compounds mediated by poly(ethylene glycol)-supported TEMPO radicals|
|Autori interni:||BENAGLIA, MAURIZIO (Primo)|
PUGLISI, ALESSANDRA (Secondo)
|Parole Chiave:||Alcohols; Aldehydes; Ketones; Oxidation; Soluble polymers|
|Settore Scientifico Disciplinare:||Settore CHIM/06 - Chimica Organica|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1016/j.tet.2005.07.107|
|Appare nelle tipologie:||01 - Articolo su periodico|
File in questo prodotto:
- PubMed Central loading...