Stereoselective synthesis of polyols precursors by allyl sulphinyl anion addition to chiral alkoxy aldehydes
作者:Rita Annunziata、Mauro Cinquini、Franco Cozzi、Laura Raimondi、Stefania Stefanelli
DOI:10.1016/s0040-4020(01)82096-2
日期:1986.1
Tandem condensation of chiral α -alkoxy and α,β-dial-koxy aldehydes with allylic sulphinyl anion, and thiophile promoted desulphurization of the resulting α-substituted allylic sulphoxide afford (E)-5-alkoxy-(or 5,6-dialkoxy)-2--alkene-1, 4-diols, advanced polyols precursors, the major stereochemical path occuring via a Felkin-Ahn (non chelation control) mode.
手性α-烷氧基和α,β-二缩醛-烯氧基醛与烯丙基亚磺酰基阴离子串联缩合,并且亲硫试剂促进所得α-取代的烯丙基亚砜的脱硫,得到(E)-5-烷氧基-(或5,6-二烷氧基) -2-烯烃-1、4-二醇,高级多元醇前体,主要的立体化学路径是通过Felkin-Ahn(非螯合控制)模式发生的。