A dialkoxy five‐membered cyclic nitrone smoothly undergoes a base‐catalyzed direct H/D exchange through umpolung reactivity of the carbon atom of the nitrone moiety. Deuterium is incorporated into a useful and versatile building block with total selectivity and a high percentage. Kinetic and in silico data indicate the formation of a transient carbenoid anion.
二烷氧基五元环硝酮通过硝酮部分碳原子的
化学反应性,平稳地进行碱催化的直接H / D交换。
氘以总选择性和高百分比被并入有用的多功能构建基块中。动力学和计算机模拟数据表明形成了短暂的类
胡萝卜素阴离子。