Surface-mediated solid phase reaction: Dramatic improvement of Michael reaction on the surface of alumina
作者:Brindaban C. Ranu、Sanjay Bhar
DOI:10.1016/s0040-4020(01)90794-x
日期:1992.1
The Michael reaction of several 1,3-dicarbonyl compounds, nitroalkanes, and thiols as donors with methyl vinyl ketone, acrolein, methyl acrylate, methyl methacrylate, and mesityl oxide as acceptors on the surface of alumina without any solvent proceed very effeciently and furnish high yield of adducts.
Borax as an Efficient Metal-Free Catalyst for Hetero-Michael Reactions in an Aqueous Medium
作者:Sahid Hussain、Saitanya K. Bharadwaj、Mihir K. Chaudhuri、Harjyoti Kalita
DOI:10.1002/ejoc.200600691
日期:2007.1
Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to α,β-unsaturated ketones, nitriles, amides, aldehydes and esters in an aqueousmedium to afford the corresponding Michael adducts in good yields at room temperature. Recycling of the catalyst and scaling up of the reactions are important attributes of this catalysis. The reactions