N-([4-(4-fluorophenyl)-2,2-dimethylpent-4-en-1-yl]carbamoyl)-4-methylbenzenesulfonamide 在
三氟甲磺酸三甲基硅酯 、
(2,6-bis(((R)-1-(mesitylamino)-1-oxopropan-2-yl)oxy)-phenyl)-λ3-iodanediyl diacetate 作用下,
生成 (R)-N-[7a-(4-fluorophenyl)-6,6-dimethyltetrahydropyrrolo[1,2-c]oxazol-3(1H)-ylidene]-4-methylbenzenesulfonamide 、 (S)-N-[7a-(4-fluorophenyl)-6,6-dimethyltetrahydropyrrolo[1,2-c]oxazol-3(1H)-ylidene]-4-methylbenzenesulfonamide