The reactivity of (PNP)Rh(Ph) (PNP = 2,6-bis(dialkylphosphinomethyl)pyridine) toward a variety of electrophiles (Ar–I, ArCH₂Cl, O₂, I₂, B₂pin₂, and ArSO₃H) was explored, and several new modes of oxidative reactivity were observed. Substituting ^tBu₂P for ⁱPr₂P provided 100-fold rate enhancement toward C–H bond activation and addressed the previously reported challenge of N₂ inhibition. Studying the stoichiometric reactivity of (PNP)Rh complexes toward C–H cleavage and oxidative functionalization led to (PNP)Rh-catalyzed cross-coupling of aryl iodides with sp² and sp³ C–H bonds.

中文翻译：

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2，6-双（二烷基膦基甲基）吡啶的铑配合物：改进的CH活化，扩大的反应范围和催化直接丙烯酸化

（PNP）Rh（Ph）（PNP = 2,6-双（二烷基膦基甲基）吡啶）对多种亲电子试剂（Ar–I，ArCH ₂ Cl，O ₂，I ₂，B ₂ pin ₂和ArSO）的反应性探索了₃ H），并观察到了几种新的氧化反应模式。用^t Bu ₂ P代替ⁱ Pr ₂ P可将C–H键活化速率提高100倍，并解决了先前报道的N ₂挑战抑制。研究（PNP）Rh配合物对C–H裂解和氧化功能化的化学计量反应性导致（PNP）Rh催化的芳基碘与sp ²和sp ³ C–H键的交叉偶联。