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Bromine water is an oxidizing, intense brown mixture containing diatomic bromine (Br 2) dissolved in water (H 2 O). [1] It is often used as a reactive in chemical assays of recognition for substances which react with bromine in an aqueous environment with the halogenation mechanism, mainly unsaturated carbon compounds (carbon compounds with 1 ...
Phenol is an organic compound appreciably soluble in water, with about 84.2 g dissolving in 1000 ml (0.895 M). Homogeneous mixtures of phenol and water at phenol to water mass ratios of ~2.6 and higher are possible. The sodium salt of phenol, sodium phenoxide, is far more water-soluble. It is a combustible solid (NFPA rating = 2).
A representative example is the reaction of phenol with a solution of vanadium tetrachloride, which yields about 60% yield of three isomeric dihydroxybiphenyl compounds. The isomer ratio and yields are unaffected by the reagent/substrate ratio. Vanadium tetrachloride is known to effect one-electron oxidations, which is invoked in this conversion. [2] Oxidative coupling of phenol by VCl 4 ...
The sample is dissolved in water, or a mixture of water and ethanol, and a few drops of neutral ferric chloride (FeCl 3) solution, which is prepared by adding de-ionised water. Add sodium hydroxide to the mixture until a permanent brown precipitate is formed. The formation of a red, blue, green, or purple coloration indicates the presence of phenols. Where the sample is insoluble in water, it ...
Hammett equation. In organic chemistry, the Hammett equation describes a linear free-energy relationship relating reaction rates and equilibrium constants for many reactions involving benzoic acid derivatives with meta- and para- substituents to each other with just two parameters: a substituent constant and a reaction constant. [1][2] This ...
In reaction depicted below 3,4,5-trimethylphenol reacts with singlet oxygen generated from oxone / sodium carbonate in an acetonitrile /water mixture to a para-peroxyquinole.
Alkali metal phenolates, such as sodium phenolate hydrolyze in aqueous solution to form basic solutions. [2] At pH = 10, phenol and phenolate are in approximately 1:1 proportions. The phenoxide anion (aka phenolate) is a strong nucleophile with a comparable to the one of carbanions or tertiary amines. [3] Generally, oxygen attack of phenoxide anions is kinetically favored, while carbon-attack ...
Resorcinol (or resorcin) is a phenolic compound. It is an organic compound with the formula C 6 H 4 (OH) 2. It is one of three isomeric benzenediols, the 1,3-isomer (or meta -isomer). Resorcinol crystallizes from benzene as colorless needles that are readily soluble in water, alcohol, and ether, but insoluble in chloroform and carbon disulfide. [6]