Sulfonylation of the benzylic C–H bond is developed through a three-component reaction of aryldiazonium tetrafluoroborates, 4-methylphenols and sodium metabisulfite (Na2S2O5). The inorganic sulfite of sodium metabisulfite is used as the SO2 surrogate. In this transformation, benzylic C(sp3)–H bond sulfonylation is achieved in the presence of a photocatalyst under visible light. A radical pathway involving
苄基CH键的磺酰化是通过四氟硼酸芳基重氮,4-甲基苯酚和焦亚硫酸钠(Na 2 S 2 O 5)的三组分反应形成的。偏亚硫酸氢钠的无机亚硫酸盐用作SO 2替代物。在这种转化中,在可见光下,在光催化剂的存在下,实现了苄基的C(sp 3)–H键磺酰化。提出了涉及芳基磺酰基和分子间氢原子抽象的自由基途径。