Reactivity of 5-alkynyl-3,4-dihydro-2H-pyrroles with Au(III) Route to vinylgold(III) complexes, aurocycles by cyclisation of these complexes and ML complexes

Abstract : The reaction of 5-alkynyl-3,4-dihydro-2H-pyrroles (imine) with AuCl3 led to the synthesis of the vinyl gold (III) complexes 3 that could give the aurocycles 4 with an excess of AuCl3. In the base presence the dimerization of 4 was observed leading to 5. If NaAuCl4 was used as gold (III) source a ligand exchange was observed leading to the complexes 6. Nucleophilicity of both nitrogen atom and alkyne function as well as imine-enamine tautomerism were involved to explain the formation of 3. (c) 2019 Published by Elsevier B.V.
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Submitted on : Wednesday, September 4, 2019 - 1:17:38 PM
Last modification on : Thursday, September 5, 2019 - 1:22:04 AM

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Huy-Dinh Vu, Christelle Bouyry, Jacques Renault, Arnaud Bondon, Fabian Lambert, et al.. Reactivity of 5-alkynyl-3,4-dihydro-2H-pyrroles with Au(III) Route to vinylgold(III) complexes, aurocycles by cyclisation of these complexes and ML complexes. Journal of Organometallic Chemistry, Elsevier, 2019, 897, pp.228-235. ⟨10.1016/j.jorganchem.2019.07.014⟩. ⟨hal-02278402⟩

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