Application of a base-induced [1,2]-rearrangement to synthesize thiophosphonate bidentate S(sp2)–N monoanionic ligand: Characterization of its silver and palladium complexes

Abstract : The O,O-diethyl thiophosphonate functional group has been introduced on position 2 of a pyrrole heterocycle following a two steps sequence that makes use of a [1,2] base-induced rearrangement applied for the first time to a O,O-diethyl thiophosphoramide intermediate. This rearrangement has been studied by low temperature NMR and the intermediates have been fully characterized. The coordination of this monoanionic bidentate (N,Ssp2) ligand to silver or palladium is studied The bidentate ligand 2 (O,O-diethyl pyrrol-2-ylthiophosphonate), associated with a palladium precursor, produces in the presence of triethylamine the complex trans-[Pd(η2-2′)2] 3 (2′ is deprotonated ligand 2). Ligand 2 also reacts with silver oxide in dichloromethane to give an unstable complex 2′-Ag that can be stabilized by addition of triphenylphosphine to produce the coordination complex 4 [Ag((η2-2′)(PPh3)2].
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Journal of Organometallic Chemistry, Elsevier, 2009, 694 (25), pp.4001 - 4007. 〈10.1016/j.jorganchem.2009.08.035〉
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Soumis le : vendredi 1 septembre 2017 - 11:10:36
Dernière modification le : jeudi 11 janvier 2018 - 06:17:06

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Sabrina Marie, Martin Lutz, Anthony L. Spek, Robertus J.M. Klein Gebbink, Gerard Van Koten, et al.. Application of a base-induced [1,2]-rearrangement to synthesize thiophosphonate bidentate S(sp2)–N monoanionic ligand: Characterization of its silver and palladium complexes. Journal of Organometallic Chemistry, Elsevier, 2009, 694 (25), pp.4001 - 4007. 〈10.1016/j.jorganchem.2009.08.035〉. 〈hal-01580243〉

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