Highly diastereoselective reduction of chiral β-ketosulphoxides under chelation control: application to the synthesis of (R)-(+)-n-hexadecano-1,5-lactone
作者:Hiroshi Kosugi、Hiroshi Konta、Hisashi Uda
DOI:10.1039/c39850000211
日期:——
The presence of zinc chloride in the reduction of chiral β-ketosulphoxides with di-isobutylaluminium hydride effects high 1,3-asymmetric induction to give β-hydroxysulphoxides; this method can be successfully applied to the synthesis of optically pure 1,4- or 1,5-lactones.
在用二异丁基铝氢化物还原手性β-酮亚砜时,氯化锌的存在会导致较高的1,3-不对称诱导,从而生成β-羟基亚砜。该方法可以成功地应用于光学纯的1,4-或1,5-内酯的合成。