The reaction of α,β-chalcone ditosylates with hydroxylamine hydrochloride under suitable conditions leads to a 1,2-aryl shift, thereby providing a new route to 4,5-disubstituted isoxazoles.
α,β-
香豆素二托烯与
盐酸羟胺在适当条件下反应,会发生1,2-芳基迁移,从而提供了一条合成4,5-二取代
异噻唑的新路径。