<i>N</i>-Methylimidazole as a Promising Catalyst for the Aza-Michael Addition Reaction of N-Heterocycles
作者:Xian Lin、Bo Liu、Qi Wu、Xue Qian、De Lv
DOI:10.1055/s-2007-983816
日期:2007.9
N-Methylimidazole has been shown to be a promising catalyst for aza-Michael reactions. Various N-heterocycles were introduced to α,β-unsaturated carbonyl compounds employing N-methylimidazole (0.05 equiv) in a highly efficient, rapid and high yielding synthesis of N-heterocyclic derivatives.
Poly(N-vinylimidazole) as an efficient and recyclable catalyst of the aza-Michael reaction in water
作者:I. P. Beletskaya、E. A. Tarasenko、A. R. Khokhlov、V. S. Tyurin
DOI:10.1134/s1070428010040019
日期:2010.4
Poly(N-vinylimidazole) effectively catalyzed Michael addition of 1H-1,2,4-triazole, 3,5-dimethyl-1H-1,2,4-triazole, uracil, oxazolidin-2-one, and succinimide to but-3-en-2-one, cyclohex-2-en-1-one, methyl acrylate, and methyl vinyl sulfone in water at room temperature. The catalyst can readily be regenerated and repeatedly used at least five times without loss in activity, as shown in the reaction of 1H-1,2,4-triazole with but-3-en-2-one as an example.