Recently, sulfonylation reactions using potassium/sodium metabisulfite as the sulfur dioxide surrogate have been developed rapidly. In most cases, the transformations go through radical processes with the insertion of sulfur dioxide under mild conditions. Additionally, transition metal catalysis is applied in the reactions for the synthesis of sulfonyl-containing compounds. Among the approaches, photoinduced conversions under visible light or ultraviolet irradiation are also involved. In this updated report, the insertion of sulfur dioxide from potassium metabisulfite or sodium metabisulfite is summarized.

中文翻译：

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使用焦亚硫酸钠/焦亚硫酸钠进行磺酰化反应的最新进展

最近，使用偏亚硫酸氢钾/钠作为二氧化硫替代物的磺酰化反应已迅速发展。在大多数情况下，在温和条件下，转化过程会经历自由基过程，并插入二氧化硫。另外，过渡金属催化应用于合成含磺酰基化合物的反应中。在这些方法中，还涉及在可见光或紫外线照射下的光诱导转化。在此更新的报告中，总结了从焦亚硫酸钾或焦亚硫酸钠中注入二氧化硫的方法。