L. Jianhua
2007
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Journal
Journal of Molecular Catalysis
Abstract
A new bisphosphite ligand has been prepared from 2,2′-Di (4-hydroxyphenyl) propane and 2,4-Di-tert-butylphenol in two steps. Catalytic system composed by Rh(acac)(CO)2 and the new ligand in situ was used as homogeneous catalyst for hydroformylation of 1-hexene. The effects of reaction temperature, pressure, P/Rh and solvent on 1-hexene hydroformylation have been studied. Under the best reaction conditions of 0.75×10-3mol/L、 P/Rh=10、 100 ℃、 2.0 MPa and 1.0 h., the conversion of 1-hexene is 100%, the selectivity of aldehyde is 98.7%, TOF is 3498.6 h-1. Compared with the Triphenylphosphine and Tri(2,4-Di-tert-butylphenyl) phosphite under the same conditions, the activity is 1.6 times of PPh3 , and is similar to Tri(2,4-Di-tert-butylphenyl) phosphite.