Synthesis of Terminal Allenes via a Copper-Catalyzed Decarboxylative Coupling Reaction of Alkynyl Carboxylic Acids
作者:Jeongah Lim、Jinseop Choi、Han-Sung Kim、In Seon Kim、Kye Chun Nam、Jimin Kim、Sunwoo Lee
DOI:10.1021/acs.joc.5b02361
日期:2016.1.4
Synthesis of terminal allenes via a copper-catalyzed decarboxylative coupling reaction was developed. Aryl alkynyl carboxylic acid, paraformaldehyde, and dicyclohexylamine were reacted with CuI (20 mol %) in diglyme at 100 °C for 2 h to produce the terminal allene in moderate to good yields. The method showed good functional group tolerance.
开发了通过铜催化的脱羧偶联反应合成末端烯丙基。使芳基炔基羧酸,低聚甲醛和二环己基胺与CuI(20 mol%)在二甘醇二甲醚中于100°C反应2 h,以中等至良好的产率生产末端异烯。该方法显示出良好的官能团耐受性。