Cu(OTf)2 was found to be a stable Lewis acid in aqueous media and to activate carbonyl compounds effectively. Aldol reactions of silyl enol ethers with aldehydes and allylation reactions of tetraallyltin with carbonyl compounds proceeded smoothly in aqueous media, to afford the corresponding adducts in high yields. In addition, the catalyst could be easily recovered quantitatively after the reaction
Aqueous reactions with a Lewis acid and an organometallic reagent. The scandium trifluoromethanesulfonate-catalyzed allylation reaction of carbonyl compounds with tetraallyltin
作者:Iwao Hachiya、Shu Kobayashi
DOI:10.1021/jo00077a009
日期:1993.12
The allylation reaction of a wide variety of carbonyl compounds with tetraallyltin was successfully carried out in aqueous media by using scandium trifluoromethanesulfonate (scandium triflate) as a catalyst.
Use of an Organometallic Reagent in Water: Sc(OTf)<sub>3</sub>-Catalyzed Allylation Reactions of Aldehydes in Micellar Systems
The Sc(OTf)3-catalyzed allylation reactions of aldehydes with tetraallyltin proceeded smoothly in micellar systems to afford the corresponding homoallylic alcohols in high yields. The reactions were successfully carried out in the presence of a small amount of a surfactant in water without using any organic solvents.