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Eine einfache Synthese von 1,3-Dihydro-1,3-diborapentafulven-Derivaten / A Convenient Synthesis of 1,3-Dihydro-1,3-diborapentafulvene Derivatives

  • Michael J. Bayer and Walter Siebert EMAIL logo
Published/Copyright: June 2, 2014
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Zeitschrift für Naturforschung B
From the journal Zeitschrift für Naturforschung B Volume 57 Issue 10

Reaction of 3,3-dimethyl-1-butynyllithiumwith boron trichloride followed by hydroboration with HBCl2 leads to 1,1-bis(dichloroboryl)-3,3-dimethylbutene (4a). Halogen exchange with boron triiodide yields the corresponding tetraiodide 4b, which undergoes a redox reaction with 3-hexyne to give the 1,3-dihydro-1,3-diborapentafulvene 3b. Its 1,3-dimethyl derivative 3c is less stable and rearranges to nido-C4B2 carboranes as well as to polymeric products. Hydroboration of 3c with HBEt2 results in the formation of the nido-C3B3 carborane 6c. The reaction of 3c with Mo(CO)6 yields the 1,3-diborapentafulvene complex 7c.

Keywords : 1,3-Dihydro-1,3-diborafulvenes; nido-2,3,4,5-Tetracarbahexaborane; nido-2,3,5-Tricarbahexaboranes
Received: 2002-5-21
Published Online: 2014-6-2
Published in Print: 2002-10-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

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  1. Nitridsulfidhalogenide der leichten Lanthanide vom Typ M6N3S4X (M = La - Nd; X = Cl, Br) mit ausgeordneten Sulfid- und Halogenid-Lagen / Nitride Sulfide Halides of the Light Lanthanides with the Formula Type M6N3S4X (M = La - Nd; X = Cl, Br) with Ordered Sulfide and Halide Positions
  2. Bis(triphenylphosphoranylidene)ammonium Dicyanoaurate(I)
  3. Die neuen Oxobismutate(III) Cs6Bi4O9, K9Bi5O13 und A2Bi4O7 (A = Rb, Cs) / The New Oxobismutates(III) Cs6Bi4O9, K9Bi5O13 and A2Bi4O7 (A = Rb, Cs)
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  6. Self-Assembly of Organo-Sulfur, Selenium and Tellurium Compounds via π-π-Stacking and Hydrogen Bonding Interactions
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  8. Eine einfache Synthese von 1,3-Dihydro-1,3-diborapentafulven-Derivaten / A Convenient Synthesis of 1,3-Dihydro-1,3-diborapentafulvene Derivatives
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https://doi.org/10.1515/znb-2002-1008
Keywords for this article
1,3-Dihydro-1,3-diborafulvenes; nido-2,3,4,5-Tetracarbahexaborane; nido-2,3,5-Tricarbahexaboranes

Articles in the same Issue

  1. Nitridsulfidhalogenide der leichten Lanthanide vom Typ M6N3S4X (M = La - Nd; X = Cl, Br) mit ausgeordneten Sulfid- und Halogenid-Lagen / Nitride Sulfide Halides of the Light Lanthanides with the Formula Type M6N3S4X (M = La - Nd; X = Cl, Br) with Ordered Sulfide and Halide Positions
  2. Bis(triphenylphosphoranylidene)ammonium Dicyanoaurate(I)
  3. Die neuen Oxobismutate(III) Cs6Bi4O9, K9Bi5O13 und A2Bi4O7 (A = Rb, Cs) / The New Oxobismutates(III) Cs6Bi4O9, K9Bi5O13 and A2Bi4O7 (A = Rb, Cs)
  4. [3+1]-Cyclisierungen zu Tetraboraporphyrinogenen / [3+1]-Cycloadditions with Formation of Tetraboraporphyrinogenes
  5. Mercury Cyanamide / Carbodiimide Networks: Synthesis and Crystal Structures of Hg2(NCN)Cl2 and Hg3(NCN)2Cl2
  6. Self-Assembly of Organo-Sulfur, Selenium and Tellurium Compounds via π-π-Stacking and Hydrogen Bonding Interactions
  7. DFT Calculations of the Structures of Various Isomers (cis/trans) of [(CH3)(PH3)M-NH2-CH2-C(O)-O] and [(Cl)(PH3)M-NH2-CH2-C(O)-O] Complexes with M = Ni, Pd and Pt
  8. Eine einfache Synthese von 1,3-Dihydro-1,3-diborapentafulven-Derivaten / A Convenient Synthesis of 1,3-Dihydro-1,3-diborapentafulvene Derivatives
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  18. Crystal Structure of trans- [ReCl2(dppp)2]Cl · ½H2O (dppp = 1,3-bis(diphenylphosphino)propane)
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