Synthesis of α-pyrones from α-oxo ketene dithioacetals
作者:R.Karl Dieter、Jeffrey R. Fishpaugh
DOI:10.1016/s0040-4039(00)83889-7
日期:1986.1
α-Oxo ketene dithioacetals can be converted into α-pyrones in a three step process involving 1,2-nucleophilic addition of ester or ketone enolate anions, acid promoted rearrangement, and subsequent enol lactonization. Utilization of esterenolates affords 6-alkylthio α-pyrones while ketone enolates give 3-alkyl substituted α-pyrones.