A highly efficient synthesis of diversely substituted 2H-pyran-2-ones and indenes through Brønsted acid promoted tandem reaction of the readily obtainable 3-hydroxyhexa-4,5-allenic esters under extremely mild conditions has been developed.
在极其温和的条件下,通过容易获得的 3-hydroxyhexa-4,5-allenic esters(3-羟基六-4,5-异烯酯)的布氏酸促进串联反应,开发出了一种高效合成多种取代的
2H-吡喃-2-酮和
茚的方法。