85553-10-2Relevant academic research and scientific papers
Construction of bidentate organosulfur ligands via (μ-RC≡CS)(μ-SLI)Fe2(CO)6 intermediates
Seyferth, Dietmar,Womack, Gary B.
, p. 2360 - 2370 (2008/10/08)
(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.
