Addition of alkyllithiums to (S)-2-(2-hydroxypropylidene)-1,3-dithiane and reduction of (S)-2-(2-hydroxy-1-alkylpropylidene)-1,3-dithianes with lithium aluminum hydride gave optically active syn- and anti-2-(2-hydroxy-1-alkylpropyl)-1,3-dithianes with high diastereoselectivity, respectively.
将烷基
锂加至(S)-2-(2-羟基亚丙基)-1,3-二
噻吩并用
氢化铝锂还原(S)-2-(2-羟基-1-烷基亚丙基)-
1,3-二噻烷具有高非对映选择性的旋光性顺式和反式2-(2-羟基-1-烷基丙基)-1,3-二
硫杂
环丁烷。