The reaction of (S)-(+)-3-hydroxytetrahydrofuran with phenyl methyl ketene in presence of n-BuLi and Et2Zn results in the formation of the diastereomeric esters (SS+SR) with a high degree of diastereoselectivity (98:2).
(S)-(+)-
3-羟基四氢呋喃在n -BuLi和Et 2 Zn存在下与苯基
甲基乙烯酮的反应导致形成非对映体酯(SS + SR),具有高度非对映选择性(98: 2)。