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  • Title: Platinum(II)-catalyzed intermolecular [3 + 2] cycloaddition of propadienyl silyl ethers and alkenyl ethers.
    Author: Kusama H, Ebisawa M, Funami H, Iwasawa N.
    Journal: J Am Chem Soc; 2009 Nov 18; 131(45):16352-3. PubMed ID: 19860447.
    Abstract:
    A Pt(II)-catalyzed [3 + 2] cycloaddition reaction of silyl propadienyl ethers and alkenyl ethers has been developed as the first example of the utilization of allenes as a three-carbon unit in a transition-metal-catalyzed intermolecular cycloaddition reaction. Pt(II)-containing 1,3-dipole equivalents generated by electrophilic activation of silyl propadienyl ethers using a Pt(II) catalyst reacted with various electron-rich alkenes to give synthetically useful functionalized cyclopentene derivatives in high yield with wide generality.
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