Ruthenium(II) complexes catalyze the insertion of sulfur dioxide into (het)aryl and alkenyl boronic acids. The transmetalation–sulfination process proceeds with DABSO in the presence of 5 mol % RuCl₂(PPh₃)₃ in methanol at 100 °C. The intermediate sulfinate salt can be quenched with various electrophiles such as alkyl halides, epoxides, Michael acceptors, and λ³-iodanes in moderate to good yields. The reported sulfone synthesis can be performed either as a direct one-pot or one-pot two-step procedure depending on the reactivity of the electrophile.

中文翻译：

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砜的合成经由钌（II）硼酸类的催化的亚磺化

钌（II）配合物催化二氧化硫插入（杂）芳基和烯基硼酸中。在5 °C的RuCl ₂（PPh ₃）₃在100°C的甲醇中，DABSO进行了金属转移-硫化过程。中间亚磺酸盐可以与各种亲电猝灭如烷基卤，环氧化物，迈克尔受体，和λ ³ -iodanes在中度至良好的产率。所报告的砜合成可根据亲电试剂的反应性，以直接一锅法或一锅两步法进行。