Tandem Mukaiyama Michael–aldol reactions catalysed by samarium diiodide
作者:Nicolas Giuseppone、Jacqueline Collin
DOI:10.1016/s0040-4020(01)00902-4
日期:2001.10
Samarium diiodide is an efficient precatalyst for tandemMichael–aldolreactions, which allow the formation of two carbon–carbon bonds by successive additions of a ketene silyl acetal and an aldehyde on cyclic α,β-unsaturated ketones. The adducts are isolated as silyl ethers, in good yields, and in some cases with high diastereoselectivities when the reactions are performed at low temperatures. Comparative
A Highly Stereoselective Synthesis of γ-Acyl-δ-lactones by the Trityl Perchlorate Catalyzed Tandem Michael-aldol Reaction
作者:Shu Kobayashi、Teruaki Mukaiyama
DOI:10.1246/cl.1986.1805
日期:1986.11.5
γ-Acyl-δ-lactones are prepared in high yields with high stereoselectivities by the trityl perchlorate catalyzed tandemMichael-aldolreactionbetween α,β-unsaturated ketones, ketene silyl acetals, and aldehydes.