3. leads to amide products which can be hydrolyzed under mild conditions. The amidation reaction is mild, general and compatible with both primary C−H bonds of tertiary and secondary alcohols, as well as secondary C−H bonds of cyclic secondary alcohols. This method provides an easy access to free 1,2-aminoalcohols after efficient and mild cleavage of the oxime directing group and activated amide.
邻
氨基醇是
生物活性分子中广泛存在的结构基序。我们报告了一种含有对
硝基苯基二
氟甲基的新型二
恶唑酮试剂的开发,该试剂 1. 显示出良好的安全性; 2.在
肟引导的
铱(III)催化的未活化的C(sp 3 )-H键的酰胺化反应中显示出非常高的反应活性; 3.生成酰胺产物,在温和条件下可
水解。酰胺化反应温和、普遍,并且与叔醇和仲醇的伯CH键以及环状仲醇的仲CH键相容。该方法在有效且温和地裂解
肟导向基团和活化酰胺后,可以轻松获得游离的 1,2-
氨基醇。