Hydrocyanation of cyclic alpha-sulfinyl ketones under different condit
ions has been studied. The obtained results show that compounds derive
d from cyclohexanone react with Et(2)AlCN yielding only sulfinyl cyano
hydrins exhibiting different configurations at sulfur and at hydroxyli
c carbon. The stereoselectivity is slightly lower but also very high s
tarting from alpha-sulfinyl cyclopentanones. The influence of Lewis ac
ids as well as the stereochemical course of these reactions have also
been discussed.