The reactions of 1-unsubstituted 2-pyridones with benzyne afforded the Diels-Alder adduct, 5, 6-benzo-2-azabarrelen-3 (2H)-ones, together with a large amount of the Michael-type adduct, 2-phenoxypyridines.
1-未取代的2-
吡啶酮与苯炔的反应生成了Diels-Alder加成产物5, 6-苯并-2-氮杂巴雷ланы-3 (2H)-酮,同时生成了大量的迈克尔型加成产物
2-苯氧基吡啶。