Diels–Alder reactions of several N-unsubstituted tautomeric 2(1H)-pyridone-2-hydroxypyridines with benzyne were examined and found to afford 5,6-benzo-2-azabarrelenones, which were converted to hitherto unknown 5,6-benzo-2-azabarrelenes.
对几种无取代的互变异构体2(1H)-
吡啶酮-2-
羟基吡啶与苯炔的Diels–Alder反应进行了研究,发现它们生成了5,6-苯并-2-氮杂巴伦酮,随后这些化合物被转化为迄今未知的5,6-苯并-2-氮杂巴伦烯。