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Calone, a derivative of 4-methylcatechol, is known in the fragrance industry as "watermelon ketone" for its distinctive odor. [3]The brand of low-temperature coke used as a smokeless fuel Coalite obtains homocatechol from ammoniacal liquor by solvent extraction, distillation and crystallisation.
C 6 H 4 (OH) 2 + XCl 2 → C 6 H 4 (O 2 X) + 2 HCl where X = PCl or POCl; SO 2; CO. Basic solutions of catechol react with iron(III) to give the red [Fe(C 6 H 4 O 2) 3] 3−. Ferric chloride gives a green coloration with the aqueous solution, while the alkaline solution rapidly changes to a green and finally to a black color on exposure to the ...
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This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
Electrochemical experiments show that (+)-catechin oxidation mechanism proceeds in sequential steps, related with the catechol and resorcinol groups and the oxidation is pH-dependent. The oxidation of the catechol 3′,4′-dihydroxyl electron-donating groups occurs first, at very low positive potentials, and is a reversible reaction.
Piperonal can be prepared by the oxidative cleavage of isosafrole or by using a multistep sequence from catechol or 1,2-methylenedioxybenzene.Synthesis from the latter chemical is accomplished through a condensation reaction with glyoxylic acid followed by cleaving the resulting α-hydroxy acid with an oxidizing agent.
Propoxur (Baygon) is a carbamate non-systemic insecticide, produced from catechol, [2] and was introduced in 1959. It has a fast knockdown and long residual effect, and is used against turf, forestry, and household pests and fleas.
Melting point: 5.5 °C (41.9 °F; 278.6 K) ... Creosol reacts with hydrogen halides to give a catechol. See also ... Text is available under the Creative Commons ...