Title of article
Low-temperature 19F NMR spectroscopy of 1-fluoro-1-lithioethenes: Stability, shifts and unexpected coupling constants
Author/Authors
Kv???ala، نويسنده , , Jaroslav and Hrabal، نويسنده , , Richard and Czernek، نويسنده , , Ji??? and Barto?ov?، نويسنده , , Ivana and Paleta، نويسنده , , Old?ich and Pelter، نويسنده , , Andrew، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2002
Pages
8
From page
211
To page
218
Abstract
Half-lives and fluorine atom shifts of stabilized 1-fluoro-1-lithioethenes bearing hydrogen, fluorine, phenyl, and/or dimethylphenylsilyl groups in the β-positions have been determined by a low-temperature 19F NMR spectroscopy. Some 1-fluoro-1-lithioethenes displayed an exceptionally low value of the trans-3JFF coupling constant. Stereoselectivity of carbenoid formation, as well as an effect of configuration on the stability is discussed.
Keywords
1-Fluoro-1-lithioalkene , Fluoroethenyllithium , Fluorinated carbanion , Fluorinated carbenoid , 19F NMR spectroscopy , Fluorovinyllithium
Journal title
Journal of Fluorine Chemistry
Serial Year
2002
Journal title
Journal of Fluorine Chemistry
Record number
1603451
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