Abstract
Polymer-supported dendritic catalysts [Gn(E-Im), Gn(A-Im), Gn(T-Im)] were prepared from Wang resins and N-alkylated imidazoles (1-3), and applied to the Baylis-Hillman reaction. Thus, the Baylis-Hillman reaction of methyl vinyl ketone and 4-nitrobenzaldehyde was performed with the catalytic resin G2(A-Im) (0.1 mmol of N-alkylated imidazole units) in DMF-H2O (9:1, v/v) at room temperature for 4 h to afford adduct 4 in 91% yield.
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