A Substitute for "Bromine in Carbon Tetrachloride"

Joshua M. Daley ^[1] ; Robert G. Landolt ^[1]
1. [1] Texas Wesleyan University
  
  Texas Wesleyan University
  
  Estados Unidos
Localización: Journal of chemical education, ISSN 0021-9584, Vol. 82, Nº 1, 2005, pág. 120
Idioma: inglés
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Resumen
- Benzotrifluoride (BTF) is a suitable solvent substitute for carbon tetrachloride in experiments requiring application of bromine (Br2) in free radical or addition reactions with organic substrates. A 1 M solution of Br2 in BTF may be used to distinguish hydrocarbons based on the ease of abstraction of hydrogen atoms in thermally or light-induced free radical substitutions. Efficacy of minimization of solvent use, by aliquot addition to neat samples, has been established. This system also provides a useful matrix for testing unknowns for unsaturation or enolizable hydrogen atoms.