Herein, a ruthenium-mediated remote C–H mono- and disulfonylation of 2-pyridones with arylsulfonyl chlorides is developed. The catalytic system consisting of a [Ru(p-cymene)Cl2]2 catalyst and KOAc additive allows 2-pyridones to undergo C3,C5-disulfonylation in 1,4-dioxane, and C5-sulfonylation when the C3-position of 2-pyridones is blocked. The successful transformation of the products and late-stage
在此,开发了
钌介导的 2-
吡啶酮与芳基
磺酰氯的远程 C-H 单磺酰化和二磺酰化。由[Ru( p-伞花烯)Cl 2 ] 2催化剂和KOAc添加剂组成的催化体系使2-
吡啶酮在1,4-
二恶烷中发生C3,C5-二磺酰化,当2的C3位发生C5-磺酰化时, -
吡啶酮类被阻断。产品的成功转化和
雌酮的后期修饰进一步凸显了该合成方案的潜在效用和意义。初步机制研究表明,远程区域选择性可能是通过螯合辅助
钌化决定的。