Reactions of 2,2-dimethyl-4-lithio-1,3-oxathiane 3,3-dioxide (2) with alkyl halides and carbonyl compounds proceed smoothly to give 4-substituted heterocycles. A general synthesis of γ-hydroxyketones from aldehydes utilizing 2 is described.
2,2-二甲基-4-
锂-1,3-氧杂噻烷3,3-二氧化物(2)与卤代烷和羰基化合物的反应顺利进行,得到4-取代的杂环。描述了利用 2 从醛合成 γ-羟基酮的一般方法。