- Construction of bidentate organosulfur ligands via (μ-RC≡CS)(μ-SLI)Fe2(CO)6 intermediates
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(μ-Dithio)bis(tricarbonyliron) reacts with alkynyllithium reagents in THF at -78°C to give initially (μ-RC≡CS)(μ-LiS)Fe2(CO)6. This species appears to be in equilibrium with either one or, in at least one case (R = Me3Si), both of two possible products of intramolecular thiolate addition to the C≡C bond: (Chemical Equation Presented) The products from such RC≡CLi/(μ-S2)Fe2(CO)6 reactions depend on the electrophilic substrate used. Alkylating and acylating agents yield products derived from the "open" reagent, while protonation and reactions with aldehydes and with group IV (1420) organometallic halides give "closed" 1,2- or 1,1-dithiolene products.
- Seyferth, Dietmar,Womack, Gary B.
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p. 2360 - 2370
(2008/10/08)
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- Addition of alkynyllithium reagents to the S-S bond of (μ-dithlo)bis(tricarbonyliron): Equilibria between open S-centered and bridged C-centered anions
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Alkynyllithium reagents cleave the S-S bond of (μ-S2)Fe2(CO)6 to give (μ-RC≡CS)(μ-LiS)Fe2(CO)6 complexes which apparently are in equilibrium with products of intramolecular S- addition to t
- Seyferth, Dietmar,Womack, Gary B.,Song, Li-Cheng
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p. 776 - 779
(2008/10/08)
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