Synthesis of cis-2,6-tetrahydropyran-4-one via diastereoselectively intramolecular cyclization of β-hydroxy allyl ketone
作者:Adam Shih-Yuan Lee、Li-Shin Lin、Yu-Ting Chang
DOI:10.1016/j.tet.2012.02.076
日期:2012.5
A series of cis-2,6-tetrahydropyran-4-ones was synthesized from the intramolecular cyclization reaction of β-hydroxy allyl ketones in the presence of Me3SiOTf as catalyst. The β-hydroxy allyl ketone was prepared from allylation reaction with β-hydroxynitrile without protection of hydroxy functionality under the Barbier-type reaction condition.
在Me 3 SiOTf为催化剂存在下,由β-羟基烯丙基酮的分子内环化反应合成了一系列顺式-2,6-四氢吡喃-4-酮。在Barbier型反应条件下,通过与β-羟基腈的烯丙基化反应制备β-羟基烯丙基酮,而没有保护羟基官能团。