Diphenyl ether was formed in aqueous tert-butanol solutions of chlorobenzene and bromobenzene in the presence of phenoxide ions. An increase in the temperature of irradiation resulted in an increase in the yields of phenol and diphenyl ether. At a temperature higher than 150掳C, chain reactions ...
Through measurements on the respective methylethers (anisoles) the O–H bond of 2,4,6-TCP turns out to be 5 kcal/mol, and that in PCP 4 kcal/mol, less strong than O–H in phenol itself. On this basis it is concluded that––in contrast with earlier proposals––displacements such ...
The aqueous chlorination reaction of α-naphthol is very fast, but it mainly affects only the activated phenol nucleus [99]. The corresponding chain of transformations based on substitution, addition, and hydrolysis reactions leads to its complete destruction with the formation of phthalic anhydride, ...
In gas phase formation of PCCD/Fs, three principle methods take place in chlorinated phenol, namely, the coupling of precursor and radical species (self-condensation), cyclization reaction and chlorination/dechlorination reactions. In case of chlorinated benzenes, oxidation and pyrolysis of chlorobenzene...
obtained by using chlorobenzene as the solvent at 100 °C (entry 19). Hydrochlorocarbonylation of alkenes With the optimized reaction conditions in hand, the scope of the hydrochlorocarbonylation have been explored (Fig.2). Under the conditions for the synthesis of branched acid chlorides, Pd...
ChlorobenzenesFuransHeterocyclic compoundsHalohydrocarbonsThe paper discusses the formation of endocrine disrupting compounds (EDCs) fromprecursors, such as phenol and chlorobenzenes, under various combustion conditions. It gives results of an exploration of the effects of precursor and catalysts on homologue...
Sonication of aqueous chloroform with phenol present produced chlorophenols, and with benzene present produced phenol, chlorobenzene and chlorophenols. These results are significant for the evaluation of sonication as a method of eliminating chlorinated organic compounds from water. They also have ...
As a consequence, formation of "dioxins" from halogenated phenols, in (slow) combustion, should proceed by combination of two (halo)phenoxy radicals rather than by displacement of (ortho-)halogen in a halophenol molecule.doi:10.1002/(SICI)1099-0690(199901)1999:13.0.CO;2-IIzabela Wiater...
As a consequence, formation of "dioxins" from halogenated phenols, in (slow) combustion, should proceed by combination of two (halo)phenoxy radicals rather than by displacement of (ortho-)halogen in a halophenol molecule.IzabelaCenterWiater
Phenol is 10-540 times as reactive as the chlorobenzenes. A second (and separate) formation pathway is from oxidative breakdown of macromolecular carbon. This route was studied with hexane, toluene and three anthraquinone derivatives as carbon model compounds. Aliphatic, monocyclic aromatic and ...