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- W4232197959 abstract "The iso-specific statistical copolymerization of unprotected polar monomers with propylene remains a grand challenge in the field of polymer chemistry. Current research is hampered because only a single natural-product-derived dimenthylphosphine-motif is known to allow for the preparation of moderately isotactic polypropylene copolymers. To overcome this structural limitation, we developed time-efficient synthetic methods that facilitate P-donor ligand development. The strength of these methods was demonstrated with preparation of twenty-five new P-stereogenic phosphine/sulfonate- and bisphosphine-monoxide-type palladium catalysts, which could typically be developed in parallel. A lead candidate was identified for iso-specific propylene polymerization. The best-performing catalysts utilizing the P-stereogenic donor motif achieved triad isotacticities of up to mm=0.75—the highest value within those reported for group 10 metal catalysts—for the homo- and copolymerization of propylene with unprotected polar monomers at an industrially relevant temperature of 50 °C." @default.
- W4232197959 created "2022-05-12" @default.
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- W4232197959 date "2020-10-04" @default.
- W4232197959 modified "2023-10-16" @default.
- W4232197959 title "Expedient Synthetic Identification of a P‐Stereogenic Ligand Motif for the Palladium‐Catalyzed Preparation of Isotactic Polar Polypropylenes" @default.
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- W4232197959 doi "https://doi.org/10.1002/anie.202009027" @default.
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