Optically active allylic tin reagent as an enantio-divergent synthon of isoprenoids via remote and divergent asymmetric induction
作者:Yutaka Nishigaichi、Hiroki Kuramoto、Akio Takuwa
DOI:10.1016/0040-4039(95)00539-o
日期:1995.5
(S)-2-(1-Hydroxymethyl)allyltin (1a) can be prepared in high enantiomeric purity. When its methylated and acetylated derivatives are allowed to add to aldehydes with the help of i-PrOTiCl3 and SnCl4, syn- and anti-homoallylic alcohols are stereoselectively obtained, respectively, via 1,4-asymmetric induction. These reactions are applied to the synthesis of the both enantiomers of a pheromone constituent, ipsenol, from a single enantiomer of 1a.