Reaction of 4-Chloro-3,5-Dinitrobenzotrifluoride with Aniline Derivatives. Substituent Effects
作者:Hamida O.M. Al-Howsaway、Magda F. Fathalla、Ali A. El-Bardan、Ezzat A. Hamed
DOI:10.3184/030823407x240926
日期:2007.9
hylphenyl)aniline derivatives were prepared by anilino-dechlorination of 4-chloro-3, 5-dinitrobenzotrifluoride. IR, UV and 1H NMR studies suggested an intramolecular hydrogen bond between the amino hydrogen and one o-nitro group. An addition-elimination mechanism was suggested based on the second-order kinetics and the dependence of rates on the nature and the position of the substituent in the aniline
Solvent and substituent effects on the reaction of 2- and 4-chloro-3,5-dinitrobenzotrifluorides with substituted anilines
作者:Basim H. M. Asghar、Magda F. Fathalla、Ezzat A. Hamed
DOI:10.1002/kin.20455
日期:2009.12
The solvent effect on a nucleophilic substitution reaction of 2‐ and 4‐chloro‐3,5‐dinitrobenzotrifluoride with substitutedanilines was studied in methanol, acetonitrile, and toluene at 25°C. This reaction is of second order, except 2‐chloro‐3,5‐dinitrobenzotrifluoride in toluene shows third order. The kA values are found to be dependent on the substituent in aniline and give good Hammett correlations