Single enantiomers and diastereoisomers of 2- and 3-alkyl-4-phenylsulfanyl-1,8-dioxa- and 1-oxa-8-thiaspiro[4.5]decanes can be prepared in good yield by acid-catalysed phenylsulfanyl migration. Either syn or anti stereochemistry can be selected by aldol reactions or by reduction of hydroxy-ketones.
可以通过酸催化的苯基
硫烷基迁移以高收率制备2-和3-烷基-4-苯基
硫烷基-1,8-二氧杂-和1-氧杂-8-
硫杂
螺[4.5]癸烷的单一对映异构体和非对映异构体。或者顺式或者反立体
化学可以通过羟醛缩合反应或通过还原羟基酮中选择。