تحضير واستخدام 6,4,4,2 – رباعي برومو -5,2- سايكلوهكسادايينون كعامل برومه انتقائي مع بعض الأمينات الاروماتية

Abstract

AbstractThe object of this research included preparation of 2,4,4,6-tetrabromo- 2,5- cyclohexadienone as a selective bromination agent to the para-position of amino group in aromatic amines ,and reactive with different types of aromatic amines at mild condition reactions.After this step the electrophilic substitution reactions in brome were achieved at the aromatic ring of some amines at 0C◦ in presence of chloroform as a solvent .From bromination process of these compounds (Aromatic amines) were obtained the following:- 4-Bromodiphenyl amine. 4- Bromo-6-chloro -2- methyl aniline. 4-Bromo-2-chloroaniline. 6- Bromo-2,4-dichloro aniline . 3- Bromo-5-nitro-2-aminopyridine.Identification of products were achieved by infrared(IR) Spectroscopy and (C.H.N) analysis.