2017•Mendeleev CommunicationsRequires access

Generation of ferrocenylvinyl cation CpFeC 5 H 4 –C + =CH 2 by protonation of ferrocenylacetylene with Nafion and its reactions with SMe 2 and PPh 3 in scCO 2 giving onium salts

O.A. Kizas, Ivan S. Chaschin, Ivan A. Godovikov, F.M. Dolgushin, D.Yu. Antonov, Л. Н. Никитин, А. Р. Хохлов

Abstract

Cation CpFeC5H4–C+=CH2 was obtained by protonation of FcCCH with Nafion superacid in DMF or scCO2 and characterized by NMR spectroscopy. The protonation in the presence of SMe2 or PPh3 affords new onium derivatives, which were isolated as the tetrafluoroborate salts.

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Key concepts: Chemistry, Protonation, Onium, Superacid, Tetrafluoroborate, Umpolung, Nuclear magnetic resonance spectroscopy, Friedel–Crafts reaction