Journal
ORGANOMETALLICS
Volume 33, Issue 13, Pages 3564-3569Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om500476d
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Funding
- Fonds der Chemischen Industrie for a Chemiefonds Fellowship
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The reaction of (3,5-(CF3)(2)C6H3)Li ((Fxyl)Li) with BH3 center dot SMe2 in Et2O furnishes Li[(Fxyl)BH3] in an essentially quantitative yield. Hydride abstraction with Me3SiCl followed by the addition of a second equivalent of (Fxyl)Li gives Li[(Fxyl)(2)BH2] in 71% yield. Treatment of Li[(Fxyl)(2)BH2] with 1 equiv of Me3SiCl and a subsequent targeted methanolysis provide access to the methoxyborane (Fxyl)(2)BOMe. The latter compound serves as starting material for the synthesis of the haloboranes (Fxyl)(2)BX (X = F, Cl, Br) through the reaction with KHF2/Me3SiCl, BCl3, and BBr3, respectively. All three haloboranes, as well as key synthesis intermediates, have been structurally characterized by X-ray crystallography.
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