1,3-Dipolar Cycloaddition of Ethyl Diazoacetate to Alkynes in the Pores of Zeolite NaY

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  • Keijiro Kobayashi
    Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo
  • Yuta Igura
    Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo
  • Shouhei Imachi
    Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo
  • Yoichi Masui
    Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo
  • Makoto Onaka
    Department of Chemistry, Graduate School of Arts and Sciences, The University of Tokyo

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<jats:title>Abstract</jats:title> <jats:p>Zeolite NaY promotes 1,3-dipolar cycloaddition of ethyl diazoacetate to alkynes having an electron-withdrawing group to afford the corresponding functionalized pyrazoles in high yields. The activation of the dipolarophile inside the pores of NaY is proposed based on the 13C MAS NMR analysis.</jats:p>

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  • Chemistry Letters

    Chemistry Letters 36 (1), 60-61, 2006-12-20

    Oxford University Press (OUP)

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