β-Phenylsulphinyl-nitro-alkenes (7) are readily prepared from acyl imidazoles and react as nitroacetylene equivalents in Diels–Alder reactions to give good yields of cycloadducts and their further products.
β-苯基亚磺酰基-硝基烯烃(7)易于从酰基
咪唑制备,并在Diels-Alder反应中以硝基
乙炔当量形式反应,从而获得高产率的环加合物及其进一步的产物。