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Volumn 9, Issue 8, 2007, Pages 882-88

Supercritical carbon dioxide and poly(Ethylene glycol): An environmentally benign biphasic solvent system for aerobic oxidation of styrene

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EID: 34547471559     PISSN: 14639262     EISSN: 14639270     Source Type: Journal    
DOI: 10.1039/b701875d     Document Type: Article
Times cited : (85)

References (75)
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    • 85032762698 scopus 로고    scopus 로고
    • 2 (200 atm, 50 °C) to afford the corresponding carbonyl compound. The PEG phase containing the metal catalyst was reused without further purification or activation. (B) Extract procedure with diethyl ether: after the addition of diethyl ether (3 × 3 mL) to the resulting mixture upon completion of the reaction, the PEG-300 layer containing the catalyst solidified when cooled to −10 to −20 °C, followed by simple decantation of the ether phase containing the oxidized products allows the catalyst to be recycled. The combined extracts were dried over magnesium sulfate and concentrated in vacuo to give the product benzaldehyde. We conducted further oxidation by the addition of successive portions of the olefins to the catalyst–PEG phase followed by stirring under identical reaction conditions
    • 2 (200 atm, 50 °C) to afford the corresponding carbonyl compound. The PEG phase containing the metal catalyst was reused without further purification or activation. (B) Extract procedure with diethyl ether: after the addition of diethyl ether (3 × 3 mL) to the resulting mixture upon completion of the reaction, the PEG-300 layer containing the catalyst solidified when cooled to −10 to −20 °C, followed by simple decantation of the ether phase containing the oxidized products allows the catalyst to be recycled. The combined extracts were dried over magnesium sulfate and concentrated in vacuo to give the product benzaldehyde. We conducted further oxidation by the addition of successive portions of the olefins to the catalyst–PEG phase followed by stirring under identical reaction conditions.
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