<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.
Micellar Solution of Sodium Dodecyl Sulfate (SDS) Catalyzes Facile Michael Addition of Amines and Thiols to ?,?-Unsaturated Ketones in Water under Neutral Conditions
作者:H. Firouzabadi、N. Iranpoor、A.?A. Jafari
DOI:10.1002/adsc.200404348
日期:2005.4
Sodiumdodecylsulfate (SDS) catalyzesfacileMichaeladditions of amines and thiols to α,β-unsaturated ketonesunderneutralmicellarconditions to afford the corresponding Michael adducts in good to high yields.