Activation of a C-H bond in a pyridine ring.: Reaction of 6-substituted 2,2′-bipyridines with methyl and phenyl platinum(II) derivatives:: N′,C(3)-"rollover" cyclometalation
Activation of a C-H bond in a pyridine ring.: Reaction of 6-substituted 2,2′-bipyridines with methyl and phenyl platinum(II) derivatives:: N′,C(3)-"rollover" cyclometalation
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DOI：
10.1021/om0301583
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发表时间：
2003-11-10
期刊：
影响因子：
2.8
通讯作者：
Zucca, A
中科院分区：
文献类型：
--
作者：
Minghetti, G;Stoccoro, S;Zucca, A
富电子衍生物cis-[Pt（R）（2）（DMSO）（2）]（R = Me，Ph）与一系列6-取代-2，2 '-联吡啶（HL）反应，分别失去甲烷或苯，生成环化铂（II）物种[Pt（R）（L）（DMSO）]，其中L为阴离子配体N'，C（3）配位。不寻常的C-H活化需要通过可检测的中间体的连续反应过程。该反应是6位取代配体所特有的：为了比较，与6，6 '-Me 2 - 2，2'-bipy不发生反应，而与5-Me-2，2 '-bipy得到加合物[Pt（R）（2）（HL）]。
The reaction of the electron-rich derivatives cis-[Pt(R)(2)(DMSO)(2)] (R = Me, Ph) with a series of 6-substituted-2,2'-bipyridines, HL, occurs with loss of methane or benzene, respectively, to yield cyclometalated platinum(II) species [Pt(R)(L)(DMSO)] where L is an anionic ligand N',C(3) coordinated. The unusual C-H activation entails a consecutive reaction process through a detectable intermediate. The reaction is peculiar of 6-substituted ligands: for comparison no reaction occurs with 6,6'-Me2-2,2'-bipy and an adduct, [Pt(R)(2)(HL)], is obtained with 5-Me-2,2'-bipy.