Wacker oxidation of various olefins in the presence of per(2,6-di-O-methyl)-β-cyclodextrin: mechanistic investigations of a multistep catalysis in a solvent-free two-phase system

✍ Scribed by Eric Monflier; Sébastien Tilloy; Emilie Blouet; Y. Barbaux; André Mortreux

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 775 KB
• Volume: 109
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/1381-1169(96)00017-9

✦ Synopsis

Oxidation

of various olefins into methylketones by a catalytic system constituted of palladium, copper, phosphomolybdovanadic acid and pe&,6-di-O-methyl)-P-cyclodextrin is investigated.

The role of each redox catalytic system component is discussed from experiments under argon atmosphere and from vanadium NMR spectroscopic studies. The influence of various parameters, such as the per(2,6-di-O-methyl)+?-cyclodextrin concentration and the nature of the phosphomolybdovanadic acid is also reported. Finally, a catalytic cycle is also proposed.