C-H bond activation by air-stable [(diimine)M(II)(mu2-OH)]2(2+) dimers (M = Pd, Pt).
C-H bond activation by air-stable [(diimine)M(II)(mu2-OH)]2(2+) dimers (M = Pd, Pt).
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DOI：
10.1021/ja076740q
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发表时间：
2008-02
影响因子：
15
通讯作者：
T. Williams;A. J. Caffyn;N. Hazari;Paul F. Oblad;J. Labinger;J. Bercaw
中科院分区：
文献类型：
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作者：
T. Williams;A. J. Caffyn;N. Hazari;Paul F. Oblad;J. Labinger;J. Bercaw
在[（diimine）Pt（μ2-OH）]22+二聚体与烯丙基和苄基C-H基团的反应中观察到耐空气和水的C-H活化。反应在温和的条件下以良好的产率进行。机理研究表明，活性物种是单体[（二亚胺）Pt（OH 2）]2+二价阳离子。相关的钯物种，[（diimine）Pd（μ2-OH）]22+，表现出类似的化学计量活化，也影响以分子氧为末端氧化剂的环己烯氧化为苯的催化作用。
Air- and water-tolerant C−H activation is observed in reactions of [(diimine)Pt(μ2-OH)]22+ dimers with allylic and benzylic C−H groups. The reactions proceed in good yields under mild conditions. Mechanistic studies indicate that the active species is the monomeric [(diimine)Pt(OH2)]2+ dication. The related palladium species, [(diimine)Pd(μ2-OH)]22+, exhibit similar stoichiometric activations and also effect catalytic oxidation of cyclohexene to benzene with molecular oxygen as the terminal oxidant.