reactions using a catalytic amount of tin(II) reagents have been developed. Namely, an aldol type reaction of tin(II) enolate is achieved starting from α,β-unsaturatedketone, aldehyde and ethylthiotrimethylsilane in the presence of a catalytic amount of tin(II) triflate sulfide. Furthermore, the catalyticasymmetric Michael reaction of tin(II) enethiolate is realized just by using a catalytic amount of tin(II)
STEREOSELECTIVE ALDOL REACTION FOR THE PREPARATION OF β-ETHYLTHIOMETHYL ALDOLS VIA TIN(II) ENOLATE BY THE USE OF A CATALYTIC AMOUNT OF THE TIN(II) SPECIES
An aldol type reaction of divalent tin enolates with aldehydes is successfully achieved by the use of only a catalytic amount of the tin(II) species to afford the cross aldol products in good yields with high stereoselectivity.
通过仅使用催化量的锡 (II) 物质成功地实现了二价锡烯醇化物与醛的羟醛型反应,以高立体选择性提供高产率的交叉羟醛产物。