novel and efficient copper-catalyzed strategy for the synthesis of diverse pyridines through the [3+3] annulation of ketones with oxime acetates has been reported. It is very convenient to obtain various unsymmetrical 2,6-diarylpyridines by changing different substrates. The rare copper-catalyzed direct difunctionalization of saturated ketones for the synthesis of nitrogen heterocycles is developed
报道了一种新颖且有效的
铜催化策略,通过酮与
乙酸肟的[3+3]环化来合成多种
吡啶。通过改变不同的底物可以非常方便地得到各种不对称的2,6-二芳基
吡啶。开发了罕见的
铜催化饱和酮直接双官能化用于合成氮杂环。该方案具有优异的官能团耐受性、易于获得的原材料、高
化学选择性和广泛的底物范围。