Bibliographic Details
| Title: |
C−H Bond Activation by Dicationic Platinum(II) Complexes. |
| Authors: |
Tom G. Driver1, Travis J. Williams1, Jay A. Labinger1, John E. Bercaw1 |
| Source: |
Organometallics. Jan2007, Vol. 26 Issue 2, p294-301. 8p. |
| Subjects: |
Complex compounds, Platinum, Coordination compounds, Activation (Chemistry) |
| Abstract: |
Double protonolysis of diimine platinum dimethyls (N-N)PtMe2(N-N ArNC(Me)C(Me)NAr) generates dicationic Pt(II) complexes that can activate a variety of C−H bonds, liberating 1 equiv of acid and forming organoplatinum species that are moderately stable to the resulting acidic conditions. Ethylbenzenes lead to 3-benzyl complexes; mechanistic experiments suggest that 3-benzyl product formation proceeds via C−H bond activation at the benzylic methylene position. In some cases -arene complexes can be observed, but their role in the C−H activation process is not clear. Cyclohexane and 1-pentene react to give 3-allyl complexes; allylbenzene gives a chelated phenyl-2-olefin structure, as determined by X-ray diffraction. No stable C−H activation products are obtained from methylbenzenes, benzene itself, or alkanes. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
