A three-component reaction of aldehyde-derived hydrazones with DABSO and aryldiazonium tetrafluoroborates is described. By using organic DABSO as the source of SO₂, this straightforward sulfonylation tactic provides an elegant access to (E)-sulfonylated hydrazones in moderate to excellent yields. Moreover, the sulfonylation of hydrazones can also be achieved under photocatalyzed conditions by using sulfonyl chlorides as the active sulfonylating reagents.

中文翻译：

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涉及插入 SO2 的腙的直接 C-H 磺酰化


描述了醛衍生腙与 DABSO 和芳基重氮四氟硼酸盐的三组分反应。通过使用有机 DABSO 作为 SO ₂ 的来源，这种简单的磺酰化策略提供了以中等至优异的收率获得 (E)-磺酰化腙的优雅途径。此外，以磺酰氯为活性磺酰化试剂，也可以在光催化条件下实现腙的磺酰化。