Synthesis of Tertiary Amides from Anionically Activated Aromatic Trifluoromethyl Groups
作者:Gavin O’Mahony、Andrew K. Pitts
DOI:10.1021/ol100507n
日期:2010.5.7
In this paper, a novel synthesis of tertiary amides from anionically activated aromatic trifluoromethyl groups is presented. Anionically activated trifluoromethyl groups react with secondary amines under aqueous conditions to afford tertiary amides. The mechanism involves initial elimination of hydrogen fluoride by an E1cB mechanism to afford an electrophilic quinone methide- or azafulvene-type intermediate
在本文中,提出了一种由阴离子活化的芳族三氟甲基基团合成叔酰胺的新方法。阴离子活化的三氟甲基在水性条件下与仲胺反应,得到叔酰胺。该机理涉及通过E1cB机理初步消除氟化氢,从而得到亲电的甲基苯醌或氮杂富烯型中间体,该中间体在水性条件下与仲胺反应,从而以高收率(高达99%)提供叔酰胺。