Self-Sensitized Photooxygenation of 3,4-Dialkoxyfurans to Vitamin C or Its Derivatives
作者:Gholam H. Hakimelahi、Moti L. Jain、Tai Wei Ly、I-Chia Chen、Krishna S. Ethiraj、Jih Ru Hwu、Ali A. Moshfegh
DOI:10.1021/jo010531l
日期:2001.10.1
Self-sensitized photooxygenation of 3,4-dialkoxyfurans 3a-d with molecular oxygen and UV- or sunlight at room temperature gave vitamin C derivatives 2a-d in good to excellent yields. Furan 3c, having photodegradable protecting groups, was also photooxygenated to give L-ascorbic acid (1) in a "one-pot" reaction. Furthermore, a novel photolytic transformation was developed for deuteration of furan 3b