A novel phosphate ligand used for the Rh-catalyzed hydroformylation of cyclohexene in a thermoregulated PEG biphase system  

作　　者：Wei Wei Yan Hua Wang Jing Yang Jiang Zi Lin Jin 

机构地区：[1]State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China

出　　处：《Chinese Chemical Letters》2007年第8期933-935,共3页中国化学快报（英文版）

基　　金：Financial support from Fok Ying Tung Education Foundation(No.91071);the National Natural Science Foundation of China(No.20376013)are gratefully acknowledged.

摘　　要：A novel phosphate ligand, tri-（methoxyl polyethylene glycol）-phosphate （TMPGPA）, has been synthesized and used in the Rhcatalyzed hydroformylation of cyclohexene in a thermoregulated PEG biphase system. Under the optimized conditions, pressure = 5 MPa （H2：CO = 1：1）, P/Rh = 10 （molar ratio）, reaction time = 4 h and temperature = 120 ℃, the conversion of cyclohexene and the yield of aldehyde are 99%. The catalyst retained in PEG phase can be easily separated from the organic phase containing product by simple phase separation and reused ten times without obvious loss in activity.A novel phosphate ligand, tri-（methoxyl polyethylene glycol）-phosphate （TMPGPA）, has been synthesized and used in the Rhcatalyzed hydroformylation of cyclohexene in a thermoregulated PEG biphase system. Under the optimized conditions, pressure = 5 MPa （H2：CO = 1：1）, P/Rh = 10 （molar ratio）, reaction time = 4 h and temperature = 120 ℃, the conversion of cyclohexene and the yield of aldehyde are 99%. The catalyst retained in PEG phase can be easily separated from the organic phase containing product by simple phase separation and reused ten times without obvious loss in activity.

关 键 词：Thermoregulated PEG biphase system HYDROFORMYLATION Phosphate ligand RHODIUM CYCLOHEXENE 

分 类 号：O624.12[理学—有机化学] O643.36[理学—化学]