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They may be viewed as hydroxyl derivatives of bromobenzene, or as brominated derivatives of phenol. There are five basic types of bromophenols (mono- to pentabromophenol) and 19 different bromophenols in total when positional isomerism is taken into account. Bromophenols are produced by electrophilic halogenation of phenol with bromine.
Bromobenzene is an aryl bromide and the simplest of the bromobenzenes, consisting of a benzene ring substituted with one bromine atom. Its chemical formula is C 6 H 5 Br . It is a colourless liquid although older samples can appear yellow.
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
A few types of aromatic compounds, such as phenol, will react without a catalyst, but for typical benzene derivatives with less reactive substrates, a Lewis acid is required as a catalyst. Typical Lewis acid catalysts include AlCl 3, FeCl 3, FeBr 3 and ZnCl 2. These work by forming a highly electrophilic complex which is attacked by the benzene ...
Phenol is an ortho/para director, but in a presence of base, the reaction is more rapid. It is due to the higher reactivity of phenolate anion. The negative oxygen was 'forced' to give electron density to the carbons (because it has a negative charge, it has an extra +I effect).
The monobromophenols are chemical compounds consisting of phenol substituted with a bromine atom. There are three isomers , 2-bromophenol, 3-bromophenol, and 4-bromophenol. Bromophenols
Dow process (phenol), a method of phenol production through the hydrolysis of chlorobenzene Topics referred to by the same term This disambiguation page lists articles associated with the title Dow process .
Unlike the Gattermann reaction, this reaction is not applicable to phenol and phenol ether substrates. [5] Although the highly unstable formyl chloride was initially postulated as an intermediate, formyl cation (i.e., protonated carbon monoxide), [HCO] + , is now thought to react directly with the arene without the initial formation of formyl ...