Copper(II) Triflate Immobilized in [bmim]BF<sub>4</sub>Ionic liquid: An Efficient Reaction Medium for Michael Addition of β-Ketoesters to Acceptor-activated Alkenes
作者:J. S. Yadav、B. V. S. Reddy、Gakul Baishya、A. Venkat Narsaiah
DOI:10.1246/cl.2005.102
日期:2005.1
1,3-Dicarbonyl compounds undergo smooth conjugate addition to α,β-unsaturated ketones in the presence of 10 mol % copper(II) triflate immobilized in air and moisture stable [bmim]BF 4 ionic liquid under extremely mild conditions to afford the corresponding Michael adducts in high to quantitative yield.
A general and efficient protocol for the Michaeladdition reactions of β-ketoesters in pure water has been developed. The reactions are successfully catalyzed by newly designed DMAP-related organocatalysts such as 4-(didecylamino)pyridine, and the desired Michael adducts are obtained in good to high yields
Efficient Organocatalytic Michael Addition Reaction of β−Ketoesters under High Pressure
作者:Hiyoshizo Kotsuki、Maya Moritaka、Keiji Nakano
DOI:10.3987/com-13-12818
日期:——
The Michael addition reaction of beta-ketoesters was efficiently promoted by a cooperative dual catalyst system composed by DMAP and thiourea A under high-pressure conditions (0.8 GPa) in toluene. The expected relatively congested adducts of 1,5-dicarbonyl compounds were prepared in high to excellent yield.
COSSY, J., SYNTHESIS,(1987) N 12, 1113-1115
作者:COSSY, J.
DOI:——
日期:——
A Simple and Convenient Method for the Cleavage of Dithioacetals to the Correspondig Carbonyl Compounds
作者:J. Cossy
DOI:10.1055/s-1987-28188
日期:——
Carbonyl compounds were regenerated in high yields when corresponding diphenyl and diethyl dithioacetals were treated with a mixture of m-chloroperoxybenzoic acid/trifluoroacetic acid in dichloromethane.