Simple preparation of some reusable and efficient polymer-supported tungsten carbonyl catalysts and clean epoxidation of cis-cyclooctene in the presence of H2O2

✍ Scribed by Shahram Tangestaninejad; Mohammad Hossein Habibi; Valiollah Mirkhani; Majid Moghadam; Gholamhossein Grivani

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 202 KB
• Volume: 255
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2006.04.020

✦ Synopsis

Tungsten hexacarbonyl was immobilized onto polystyrene (2% cross-linked with divinylbenzene) via different linkages to afford polymersupported tungsten carbonyl catalysts. These catalysts were used for the epoxidation of cis-cyclooctene with hydrogen peroxide. The effect of different solvents and oxygen donors were investigated in the epoxidation of cis-cyclooctene with catalyst 2e and CH 3 CN was chosen as reaction media and H 2 O 2 as oxidant. We found that the polymer-supported tungsten carbonyl catalysts were efficient and reusable catalysts in this reaction. These catalysts could be reused 3-10 times in the epoxidation of cis-cyclooctene.