Aromatic Bromination in Concentrated Nitric Acid

Autor:	Mikhail K. Grachev, Lomzakova Vera I, Alexander M. Andrievsky, Mikhail V. Gorelik
Rok vydání:	2014
Předmět:	Isophthalic acid Terephthalic acid Phthalic anhydride chemistry.chemical_compound Bromine chemistry Nitric acid Nitration Organic chemistry chemistry.chemical_element Halogenation
Zdroj:	Open Journal of Synthesis Theory and Applications. :15-20
ISSN:	2168-1252 2168-1244
DOI:	10.4236/ojsta.2014.32003
Popis:	Action of bromine in concentrated nitric acid allows carrying out mono- and polybromination of moderately deactivated aromatic compounds. 4-Chloronitrobenzene and isophthalic acid turnes into 3-bromo-4-chloronitrobenzene and 5-bromoisophthalic acid at reaction with bromine in concentrated nitric acid at 20°C whereas in absence of bromine in the same conditions 4-chloro-1, 3-dinitrobenzene and 5-nitroisophthalic acid are formed accordingly. Presence of bromine in concentrated nitric acid changes nitrating capacity to brominating one. Terephthalic acid and phthalic anhydride at heating with bromine in concentrated nitric acid can be transformed to appropriating tetrabromo substituted compounds.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7d82cdedc9c418f9d8c09ad5fee8c5b4 https://doi.org/10.4236/ojsta.2014.32003 Zobrazit plný text záznamu