C-H and N-H activation by Pt(0) in N- and O-heteroaromatic compounds |
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| Authors: | Janine T Chantson Simon Lotz |
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| Affiliation: | Department of Chemistry, University of Pretoria, Hillcrest, Pretoria 0002, South Africa |
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| Abstract: | The reactions of [Pt(PEt3)4] with various azoles afforded platinum(II) hydride complexes of the type trans-[PtH(1-azolyl)(PEt3)2], where azolyl=indolyl (1), imidazolyl (2), benzimidazolyl (3), pyrazolyl (4) and indazolyl (5), by oxidative insertion of the metal centre into the N-H bonds of the respective azoles. Pyrrole was much less reactive. Complexes trans-[PtH(R)(PEt3)2], where R=2-furyl (6), 2-benzoxazolyl (7) and 2-benzothiazolyl (8) were prepared via C-H bond activation. For benzothiazole, insertion into the C-S bond did not occur. Analogous C-H activation products with 1-methylpyrrole and dibenzofuran could not be isolated. |
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| Keywords: | Platinum hydrides Oxidation C-H activation N-H activation NMR |
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