1,2-Cyclohexanediones were found to be dioxygenated by molecular oxygen with the aid of cupric ion to afford 1,5-keto acids and carbon monoxide. The reaction proceeds possibly via an endoperoxide intermediate. Methyl α-hydroxyadipates were also formed as byproducts. The mechanism of oxygenation is discussed.
1,2-环己二酮被发现能够在
铜离子的辅助下被分子氧双氧合,生成1,5-
酮酸和
一氧化碳。反应可能通过一个内过氧化物中间体进行。同时,也生成了作为副产物的甲基α-羟基
己二酸酯。氧化的机制被讨论。