Aromatic compounds consisting of a benzene ring containing not more than 3 substituents, including not more than 2 NO2 groups, not more than 2 carbonyl halide radicals, not more than 2 hydrocarbonoxy groups where the hydrocarbon is free ... Britton, Edgar C.,Tree Jr., Russell M. - US 被...
Bromination of alkylbenzenes using bromine in carbon tetrachloride yields ring brominated products in the presence of K10-montmorillonite. In contrast, bromination without clay results only in side-chain bromination.doi:10.1016/S0040-4020(96)01147-7Chockalingam Venkatachalapathy...
A process for partially brominating non-condensing ring aromatics (e.g. diphenyl ether) in the absence of a solvent by adding the polyaromatic to a stoichiometric excess of liquid bromine containing a zirconium halide catalyst. Product containing three bromine atoms per benzene ring (e.g., hexa...
Benzylic bromination –free-radical bromination of the alkyl group adjacent to an aromatic ring Benzylic oxidation –complete oxidation of an alkyl group adjacent to benzene to a carboxylic acid. 3. “Phenyl” vs “Benzyl” : What’s The Difference? First, one quick order of business. Le...
A process for the side-chain bromination of alkylbenzenes according to Formula (I) wherein Ris C-C-alkyl; Ris H or C-C-alkyl which can be unsubstituted or substituted by one or more cyano groups; Ris H or C-C-alkyl which can be unsubstituted or substituted by one or more cyano gr...
Ring bromination of alkylbenzenes at room temperature was effectively performed on aromatic substrates catalyzed by zeolite 13X or mordenite after introduction of iron(III) ions. Other zeolites and ions were also studied. Almost quantitative yields of p- and o-bromo derivatives without dibromo or si...
The benzene ring is much more stable, and the corresponding products of aromatic electrophilic substitution were not found. Chlorine water results in a greater number products and higher degree of conversion, including the formation of chloroform. A conclusion on the possible contribution of radical ...
ChemInform Abstract: Reactions of Dibromotetrafluorobenzene Derivatives with Sodium Phenoxide Salts. Competing Hydrodebromination and SNAr Processes. 1,2- and 1,3-dibromotetrafluorobenzene react with sodium phenoxide derivatives at sites para to ring bromine because these positions are activated by fluor.....
A very simple, efficient, and regiospecific protocol for aminobromination of a wide scope of beta-nitrostyrene derivatives with N-bromoacetamide (NBA) as nitrogen/bromine sources has been developed by using K(3)PO(4) as catalyst. The reaction proceeded smoothly and cleanly to give the bromoamine...
with 6 N hydrochloric acid; nor, when dissolved in benzene, does it react with hydrogen chloride gas at room temperature. This stable (m.p. 188°) and easily prepared compound appeals to us as a material with which to investigate the chemical behaviour of deactivated hydrogen atoms attached ...