Abstract
It was examined whether group 6 transition metal complexes, MCl2(CO)3(AsPh3)2 (M=W, Mo), work as catalysts in the polymerization of substituted acetylenes. WCl2(CO)3(AsPh3)2 polymerized phenylacetylene and its ring-substituted derivatives in good yields, while MoCl2(CO)3(AsPh3)2 polymerized 1-chloro-1-octyne, tert-butylacetylene, and ortho-substituted phenylacetylenes in high yields. These complexes worked as catalysts alone and did not require either of ultra violet (UV) irradiation and CCl4 solvent unlike the M(CO)6-CCl4-hν systems. Consequently, various solvents including toluene and cyclohexane were available. Addition of Lewis acids and organometallics did not enhance the catalytic activity of these complexes. The present catalysts are relatively stable to air and moisture, and hence convenient and versatile in the polymerization of various acetylenes.
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Nakako, H., Misumi, Y., Masuda, T. et al. Novel Group 6 Transition Metal Catalysts, MCl2(CO)3(AsPh3)2 (M=W, Mo), for the Metathesis Polymerization of Substituted Acetylenes. Polym J 30, 577–580 (1998). https://doi.org/10.1295/polymj.30.577
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DOI: https://doi.org/10.1295/polymj.30.577