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• W2108331617 abstract "[12079-72-0] C8H7BF4FeO3 (MW 293.81)InChI = 1S/C5H7.3CO.BF4.Fe/c1-3-5-4-2;3*1-2;2-1(3,4)5;/h3-5H,1-2H2;;;;;/q;;;;-1;InChIKey = UBAAKLZMUZPKID-UHFFFAOYSA-N(organometallic electrophile towards a variety of carbon and heteroatom nucleophiles)Physical Data: yellow solid, mp 163–165 °C (dec) (PF6− salt).Solubility: sol polar solvents (e.g. MeNO2, Me2CO); slightly sol CHCl3, CH2Cl2; reacts with water, alcohols.Form Supplied in: not commercially available.Analysis of Reagent Purity: NMR, elemental analysis.Preparative Methods: was first prepared by the protonation of tricarbonyl(η4-pentadienol)iron with Tetrafluoroboric Acid in the presence of Acetic Anhydride (eq 1).1(1)Hexafluorophosphoric acid or perchloric acid may also be used to generate the corresponding PF6− and ClO4− salts. A wide variety of substituted pentadienyl cations, which may be of greater synthetic interest, have been prepared by protonation of substituted dienol and dienyl ether complexes.2-17 Bis[(dienyl)Fe(CO)3] dications have been prepared by protonation of bis-dienol complexes.18 Protonation of tricarbonyl(1,3,5-hexatriene)iron generates the tricarbonyl(1-methylpentadienyl)iron cation.19 Hydride abstraction from (cis-pentadiene)Fe(CO)3 (but not the trans isomer) with Triphenylcarbenium Tetrafluoroborate gives the title cation (eq 2).1 This methodology has been used to prepare a few substituted cations.20-22(2)Purification: by reprecipitation from MeNO2/ether.Handling, Storage, and Precautions: the solid may be stored under inert atmosphere for extended periods. Perchlorate salts of the cation are explosive." @default.
• W2108331617 created "2016-06-24" @default.
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• W2108331617 date "2001-04-15" @default.
• W2108331617 modified "2023-09-23" @default.
• W2108331617 title "Tricarbonyl(pentadienyl)iron Tetrafluoroborate" @default.
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• W2108331617 doi "https://doi.org/10.1002/047084289x.rt193" @default.
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