Abstract
The M(CO)6-Ph2CCl2-hν (M=W, Mo) systems worked as effective catalysts in the metathesis polymerization of substituted acetylenes and norbornene. Thus, W(CO)6-Ph2CCl2-hν polymerized phenylacetylene in toluene at 30°C for 24 h to provide a polymer with Mw 30000 in 70% yield, and polymerized norbornene at 60°C to give a polymer with Mw 26000 quantitatively. Ph2CCl2 and ultraviolet (UV) irradiation were essential for the catalytic activity. However, Ph2CCl2 was sufficient in catalytic amounts unlike the M(CO)6-CCl4-hν systems which require CCl4 as solvent. A maximum was seen in catalytic activity at [Ph2CCl2]/[M]=0.5–2. The molecular weight of the poly(phenylacetylene) was higher than those for MCln-based catalysts.
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Misumi, Y., Tamura, K., Nakako, H. et al. Metathesis Polymerization of Substituted Acetylenes and Norbornene by M(CO)6-Ph2CCl2-hν (M=Mo, W) Catalysts. Polym J 30, 581–584 (1998). https://doi.org/10.1295/polymj.30.581
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DOI: https://doi.org/10.1295/polymj.30.581