Michael Addition of Various Nitrogen and Oxygen Nucleophiles to 1,1-Diethoxybut-3-yn-2-one
作者:Leiv Sydnes、Myagmarsuren Sengee
DOI:10.1055/s-0031-1289294
日期:2011.12
furnish a Michaeladdition product, but catalyzes a trimerization that leads to formation of a 6H-1,3-dioxine derivative. When bis-nucleophiles, for instance hydrazine and hydroxylamine, are used, the Michael-addition products are unstable and undergo secondary reactions to form heterocyclic compounds, which are isolated in excellent yields. acetylenic ketones - Michaeladditions - vinyl ketones - cyclotrimerization