N-substituted pyridones (1) easily undergo singlet oxygenation to give exclusively the corresponding endoperoxides (2), which decompose to give pyridones again while liberating 1O2 in high yield.
N-取代的
吡啶酮(1)容易进行单线态氧合,仅得到相应的内过氧化物(2),它们分解后又再次生成
吡啶酮,同时以高产率释放出1O2。