Sequential Elimination-Reduction Reactions Promoted by Samarium Diiodide: Synthesis of 2,3-Dideuterioesters or -amides
作者:José M. Concellón、Humberto Rodríguez-Solla
DOI:10.1002/1521-3765(20011001)7:19<4266::aid-chem4266>3.0.co;2-8
日期:2001.10.1
A facile and general sequential elimination/reduction process promoted by samarium diiodide provides an efficient method for synthesizing saturated esters or amides 3 from readily available starting materials. The reaction involves a beta-elimination of the starting 2-halo-3-hydroxyesters or -amides 1 and subsequent 1,4-reduction of the obtained alpha,beta-unsaturated esters or amides in the presence
由二碘化promote促进的简便且通用的顺序消除/还原过程提供了一种从容易获得的起始原料合成饱和酯或酰胺3的有效方法。该反应包括在存在H 2 O的情况下β-消除起始的2-卤代3-羟基酯或-酰胺1,随后1,4-还原所得的α,β-不饱和酯或酰胺。当使用D20代替H2O时,会分离到2,3-二氘代子宫酸酯或-酰胺4。提出了一种机制来解释这种综合。