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Bromopentafluorobenzene

Bromopentafluorobenzene is an organofluorine compound with the formula C6F5Br. It is a colorless liquid that is used to prepare pentafluophenyl compounds. These syntheses typically proceed via the intermediacy of C6F5Li or the Grignard reagent.[1] Illustrative is preparation of tris(pentafluorophenyl)borane:[2]

3 C6F5MgBr + BCl3 → (C6F5)3B + 3 MgBrCl

Other derivatives include LiB(C6F5)4,[3] [CuC6F5]4,[1] and Ni(C6F5)2(dioxane)2.[4]

References

  1. ^ a b Allan Cairncross; William A. Sheppard; Edward Wonchoba (1979). "Pentafluorophenylcopper Tetramer, A Reagent for Synthesis of Fluorinated Aromatic Compounds". Org. Synth. 59: 122. doi:10.15227/orgsyn.059.0122.
  2. ^ Piers, W. E.; Chivers, T. “Pentafluorophenylboranes: from Obscurity to Applications”, Chemical Society Reviews, 1997, 26, 345-354. doi:10.1039/cs9972600345
  3. ^ Tanaka, Katsunori; Fukase, Koichi (2007). "Lithium tetra(pentafluorophenyl)borate". e-EROS Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rn00752. ISBN 978-0471936237. S2CID 96944152.
  4. ^ Sanchez, G.; Momblona, F.; Sanchez, M.; Perez, J.; Lopez, G.; Casabo, J.; Molins, E.; Miravitlles, C. (1998). "Synthesis of Homo- and Heterobimetallic Complexes Containing the Ni(C6F5)2 Moiety. Crystal Structure of [(C6F5)2Ni(μ-SPh)2Pd(dppe)]". Eur. J. Inorg. Chem. 1998 (8): 1199–1204. doi:10.1002/(SICI)1099-0682(199808)1998:8<1199::AID-EJIC1199>3.0.CO;2-K.