Under oxidative conditions, triarylbismuthines and sulfinates were transformed into diaryl sulfones. A transition-metal-like two-electron redox process at the Bi center was achieved in this reaction. Sulfur dioxide generated in situ can also replace sulfinates to deliver the corresponding symmetric diaryl sulfones. A rational mechanism for this reaction was also proposed that involves a Bi(III)–Bi(V)
探索主族元素催化活性的研究很有吸引力。我们在此报告我们对
铋试剂与亚
磺酸盐或 SO 2替代物磺酰化的研究。在氧化条件下,三芳基
铋和亚
磺酸盐转化为二芳基砜。该反应在Bi中心实现了类似过渡
金属的双电子氧化还原过程。原位生成的
二氧化硫也可以替代亚
磺酸盐以提供相应的对称二芳基砜。还提出了该反应的合理机制,涉及 Bi(III)-Bi(V) 流形。