有机金属 Pd(II)前体对氧气的活化：Pd(IV)-OH 配合物的形成及其 C-O 键形成反应活性。
Dioxygen activation by an organometallic Pd(II) precursor: formation of a Pd(IV)-OH complex and its C-O bond formation reactivity.
机构信息
Department of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, USA.
出版信息
Chem Commun (Camb). 2014 Mar 21;50(23):3036-9. doi: 10.1039/c3cc49387c.
The complex (Me3tacn)Pd(II)(CH2CMe2C6H4) is readily oxidized by O2 or H2O2 to yield the Pd(IV)-OH complex (Me3tacn)Pd(IV)(OH)(CH2CMe2C6H4). Thermolysis of this product leads to the selective C(sp(2))-O reductive elimination of 2-tert-butylphenol, no C(sp(3))-O elimination product being detected. This system represents a rare example of selective C(sp(2))-O bond formation that is relevant to Pd-catalyzed aerobic C-H hydroxylation reactions.
(Me3tacn)Pd(II)(CH2CMe2C6H4) 配合物容易被 O2 或 H2O2 氧化，生成 Pd(IV)-OH 配合物 [(Me3tacn)Pd(IV)(OH)(CH2CMe2C6H4)]+。该产物的热解导致 2-叔丁基苯酚选择性的 C(sp(2))-O 还原消除，未检测到 C(sp(3))-O 消除产物。该体系代表了一个罕见的选择性 C(sp(2))-O 键形成的例子，与 Pd 催化的有氧 C-H 羟化反应有关。
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