作者:Stephen J. Eitelman、Derek Horton
DOI:10.1016/j.carres.2006.08.009
日期:2006.11
Acetylation of the 2,3-O-isopropylidene derivative (1) of D-glyceraldehyde with hot acetic anhydride in the presence of sodium acetate give a mixture of (Z)- and (E)-enol acetates (2 and 3), together with the acetylated racemic aldehydrol (4) of 1. Likewise, the acyclic aldehydo 2,3:4,5-diisopropylidene acetals of D- and L-arabinose, D-xylose, and D-ribose underwent conversion into enol acetates, with
在乙酸钠存在下,将D-甘油醛的2,3-O-异亚丙基衍生物(1)与热乙酸酐乙酰化,得到(Z)-和(E)-烯醇乙酸酯(2和3)的混合物乙酰化外消旋乙醛(4)为1。同样,D-和L-阿拉伯糖,D-木糖和D-核糖的无环2,3:4,5-二异亚丙基缩醛经转化为烯醇乙酸酯, (Z)异构体占优势,并且可光化学转化为相应的(E)异构体。在其他乙酰化条件下,醛衍生物被转化为相应的醛氢二乙酸酯。