A novel synthetic method for γ-acetoxy-(E)-α,β-unsaturated esters by the palladium catalyzed regio- and stereoselective acetoxylation of β,γ-unsaturated esters
作者:Jiro Tsuji、Kiyomi Sakai、Hideo Nagashima、Isao Shimizu
DOI:10.1016/0040-4039(81)80167-0
日期:1981.1
A new synthetic method for γ-acetoxy-α,β-unsaturated esters by the acetoxylation of β,γ-unsaturated esters catalyzed by PdCl2 in the presence of KOAc and pentyl nitrite in acetic acid is presented. The reaction takes place at γ-position of the esters regioselectively with double bond migration to α,β-position. The E configuration of the double bond was confirmed by NMR analysis. Preliminary investigation
提出了在KOAc和亚硝酸戊酯存在的条件下,PdCl 2催化β,γ-不饱和酯的乙酰氧基化反应的γ-乙酰氧基-α,β-不饱和酯的合成方法。该反应在酯的γ-位置上进行区域选择性,双键迁移至α,β-位置。双键的E构型通过NMR分析确认。描述了使用该反应合成丙酮酸蛋白和丙酮酸酚的初步研究。