作者:J. Menéndez、Vellaisamy Sridharan、Miriam Ruiz
DOI:10.1055/s-0029-1217135
日期:2010.3
In the presence of sodium acetate, the reaction between 2,2,6-trimethyl-4H-1,3-dioxin-4-one and secondary or tertiary alcohols (including chiral ones) or primary or secondary amines could be carried out in refluxing tetrahydrofuran, under much milder conditions than those described in the literature. In these new conditions, side products normally observed using the traditional protocol were avoided, and β-keto esters and β-ketoamides were normally obtained in quantitative yields.
在中醋酸钠的存在下,2,2,6-三甲基-4H-1,3-二恶英-4-酮与二级或三级醇(包括手性醇)或一级或二级胺的反应可以在回流四氢呋喃中进行,条件比文献中描述的温和得多。在这些新条件下,通常使用传统方法观察到的副产物被避免,并且β-酮酯和β-酮酰胺通常以定量产率获得。