The adoption of a pseudoallylic (η³) form makes palladium benzylic derivatives a class of stabilized palladium alkyls that can undergo β-H elimination reactions in a more controlled way. α-(Pentafluorophenylmethyl)benzyl palladium complexes have been studied, and they decompose by β-H elimination to give palladium hydrides that, depending on the auxiliary ligands, can: (a) transmetalate to another palladium atom and, by reductive elimination, give hydrogenated products; this process is favored for a combination of bridging ligands (i.e., halogens) and low coordinating ligands. (b) Be used as a hydride source and get trapped by a diene to give palladium allylic derivatives. The presence of carbon monoxide does not induce a β-H elimination reaction, and only CO insertion into the Pd–benzyl bond to give acyl derivatives is observed.

中文翻译：

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钯（II）的α-取代的苯甲酸络合物作为钯氢化物的前体

通过一个pseudoallylic的（η ³）形式使钯苄基衍生物成为一类稳定的钯烷基，可以以更可控的方式进行β-H消除反应。已经研究了α-（五氟苯基甲基）苄基钯配合物，它们通过β-H消除反应分解生成氢化钯，取决于辅助配体，氢化钯可以：（a）过渡金属化为另一个钯原子，并通过还原消除进行氢化产品; 对于桥接配体（即卤素）和低配位配体的组合，此方法是有利的。（b）用作氢化物源，并被二烯捕获，得到钯烯丙基衍生物。一氧化碳的存在不会引起β-H消除反应，仅观察到CO插入Pd-苄基键以生成酰基衍生物。