作者:Yoshihiro Shigemasa、Hiroshige Oikawa、Shin-ichiro Ohrai、Hitoshi Sashiwa、Hiroyuki Saimoto
DOI:10.1246/bcsj.65.2594
日期:1992.10
α,α-Disubstituted propargylic alcohols were transformed into enones by the catalysis with Ag(I) or Ag(I)–Me3SiCl under the mild conditions. This procedure provides a new synthetic method of α,β-unsaturated ketones having an oxygen function at α′ position from 2-butyne-1,4-diol derivatives. 3-Acetoxy-1,4,4-triphenyl-3-buten-2-one was obtained from 4-acetoxy-1,1,4-triphenyl-2-butyn-1-ol by the catalysis with tin(IV) chloride or aluminium chloride.
α,α-二取代的丙炔醇在温和条件下通过Ag(I)或Ag(I)–Me3SiCl催化转化为烯酮。该方法提供了一种从2-丁炔-1,4-二醇衍生物合成α′位具有氧功能的α,β-不饱和酮的新合成途径。通过四氯化锡或氯化铝催化,4-乙氧基-1,1,4-三苯基-2-丁炔-1-醇转化为3-乙氧基-1,4,4-三苯基-3-丁烯-2-酮。