The scope and mechanism of rearrangement of 4,6-dialkoxy-2-pyrones
作者:Hemalatha Venkataraman、Jin K. Cha
DOI:10.1016/s0040-4039(00)99426-7
日期:1989.1
The scope and mechanism of a remarkably facile interconversion between 4,6-dialkoxy-3-alkyl-2-pyrones and their corresponding 5-alkyl isomers is described. The preponderance of the latter over the former is rationalized by the stereoelectronic conformational preference of the C4-alkoxy group.