42117-07-7Relevant academic research and scientific papers
Low-temperature 19F NMR spectroscopy of 1-fluoro-1-lithioethenes - Stability, shifts and unexpected coupling constants
Kvicala, Jaroslav,Hrabal, Richard,Czernek, Jiri,Bartosova, Ivana,Paleta, Oldrich,Pelter, Andrew
, p. 211 - 218 (2002)
Half-lives and fluorine atom shifts of stabilized 1-fluoro-l-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.
A ONE-POT SYNTHESIS OF UNSYMMETRICAL AND SYMMETRICAL TETRASUBSTITUTED α-FLUORO-α,β-UNSATURATED ESTERS
Tsai, Hou-Jen,Thenappan, Alagappan,Burton, Donald J.
, p. 205 - 212 (2007/10/02)
Acylation of -Li+ 1 with acid chlorides RC(O)Cl or phosgene ClC(O)Cl and subsequent reaction of the acylated phosphonate with organometallic reagents (R'M) provide unsymmetrical and symmetrical tetrasubstituted α-f
