A study of molybdenum catalysts in the polymerization of 2,5-didodecyl-1,4-dipropynylbenzene |
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| Authors: | Ruta K Bly Uwe HF Bunz |
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| Institution: | a Department of Chemistry and Biochemistry, The University of South Carolina, 631 Sumter Street, Columbia, SC 29201,USA
b School of Chemistry and Biochemistry, Georgia Institute of Technology, 770 State Street, Atlanta, GA 30332, USA |
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| Abstract: | The reaction of 2,5-didodecyl-1,4-dipropynylbenzene with different molybdenum sources (Mo(CO)6, norbornadiene-Mo(CO)4, cyclooctadiene-Mo(CO)4, cycloheptatriene-Mo(CO)3, (PhC CPh)3Mo(CO), (acac)2MoO2/AlEt3) was investigated in the presence of 4-chlorophenol or 2-fluorophenol. Upon heating to 105-130 °C, the formation of didodecyl-PPE resulted. The degree of polymerization of the PPE is dependent on the used phenol and to the utilized molybdenum precursor. The most active catalyst forms from (acac)2MoO2, AlEt3 and 2-fluorophenol. This catalyst combination gives high molecular weight PPEs after 6 h at 105 °C. |
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| Keywords: | Group 6 Molybdenum Alkyne Metathesis Phenol Co-catalyst |
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