The product aryl-substituted 2-oxindoles are formed in generally good yields. With substituted arenes such as toluene, bromobenzene, or anisole, the Friedel–Crafts reactions occur with excellent regioselectivity. A mechanism is proposed involving carbocationic electrophiles leading to the aromatic substitution chemistry.
已经制备了一系列
丙酮基取代的3-羟基-2-氧
吲哚,并与
芳烃在超酸促进的Friedel-Crafts反应中反应。产物芳基取代的2-氧
吲哚通常以良好的产率形成。对于取代的
芳烃,例如
甲苯,
溴苯或
苯甲醚,Friedel-Crafts反应的区域选择性极好。提出了涉及碳阳离子亲电试剂导致芳族取代
化学的机理。