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'Alkenyltin Compounds' in keywords Facet   Publication Year 1996  [X]
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1Author    B. Ernd, W. Rackm Eyer, D. Örfler, W. Olfgang Milius, M. Ax, H. ErberholdRequires cookie*
 Title    ,1-Organoboration of Trimethyl-l-propynyltin Using Diorganoboryl-Substituted Ferrocenes  
 Abstract    The reactions of various diorganoborylferrocenes, F c -B R 2 [1, R = Me (a), Et (b), 'Pr (c), 'Bu (d), Ph (f), R2B = 9-borabicyclo[3.3.1]nonyl (e)] and 1,1 '-bis(9-borabicyclo[3.3.1]nonyl)-ferrocene (2) with trimethyl-l-propynyltin (3) were studied, and the products of the 1,1-organoboration were characterized as the alkenyltin compounds 4 -6 by 'H, UB, 13C and 119Sn NMR. In the cases of l a -I d and If, there is competition between the transfer of a ferrocenyl group and the other organyl groups R from boron to carbon, whereas in the case of the 9-borabicyclo[3.3.1]nonane derivatives le and 2, the enlargement of the bicyclic system takes place selectively (compounds 4e and 6). The molecular structure of the product 6, obtained from the reaction between the l,l'-diborylated ferrocene 2 and two equivalents of 3, was determined by single crystal X-ray analysis (space group P2x!c\ monoclinic; Z = 4, a = 958.3(2), b = 1610.4(3), c = 2405.3(5) pm and ß = 90.33(3)°). 
  Reference    Z. Naturforsch. 51b, 851 (1996); received October 26. 1995 
  Published    1996 
  Keywords    Ferrocenes, Trimethyl-l-propynyltin, 1, 1-Organoboration, Alkenyltin Compounds, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0851.pdf 
 Identifier    ZNB-1996-51b-0851 
 Volume    51