420-25-7Relevant articles and documents
A method for the preparation of ethylene fluorine bromine
-
Paragraph 0036; 0037, (2017/05/02)
The invention discloses a preparation method of 1-bromo-1-fluoroethylene.The preparation method comprises: two-stage bromination reaction and hydrogen bromide removal reaction; and has the characteristics of easily-available raw materials, low temperature of hot bromination reactions, high reaction yield, low cost, green, and environment-friendliness.
METHOD FOR PRODUCING 1,1-DIBROMO-1-FLUOROETHANE
-
Paragraph 0089, (2016/08/29)
An object of the present invention is to provide a production method that makes it possible to produce 1,1-dibromo-1-fluoroethane easily and sustainably. The present invention provides a method for producing 1,1-dibromo-1-fluoroethane, the method comprising step A of reacting 1,1-dibromoethylene with hydrogen fluoride to obtain 1,1-dibromo-1-fluoroethane.
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 (2007/10/03)
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.