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Creators/Authors contains: "Tsay, Charlene"

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  1. ; ; (, Organometallics)
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  2. ; ; ; ; (, Journal of the American Chemical Society)
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  4. ; ; (, Organometallics)
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  7. ; ; ; ; ; ; ; ; ; (, The Journal of Physical Chemistry Letters)
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  8. ; ; ; ; ; ; ; (, The Journal of Physical Chemistry A)
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  9. ; ; ; (, Chemistry – A European Journal)
    Abstract Vanadium‐based catalysts have shown activity and selectivity in ring‐opening metathesis polymerization of strained cyclic olefins comparable to those of Ru, Mo, and W catalysts. However, the application of V alkylidenes in routine organic synthesis is limited. Here, we present the first example of ring‐closing olefin metathesis catalyzed by well‐defined V chloride alkylidene phosphine complexes. The developed catalysts exhibit tolerance to various functional groups, such as an ether, an ester, a tertiary amide, a tertiary amine, and a sulfonamide. The size and electron‐donating properties of the imido group and the phosphine play a crucial role in the stability of active intermediates. Reactions with ethylene and olefins suggest that both β‐hydride elimination of the metallacyclobutene and bimolecular decomposition are responsible for catalyst degradation. 
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  10. ; ; (, Journal of the American Chemical Society)
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