chloranil


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Related to chloranil: chloranilic acid, DDQ

chloranil

[klȯr′an·əl]
(organic chemistry)
C6Cl4O2 Yellow leaflets melting at 290°C; soluble in organic solvents; made from phenol by treatment with potassium chloride and hydrochloric acid; used as an agricultural fungicide and as an oxidizing agent in the manufacture of dyes.
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"The primary reason for the carbazole violet increases is limited availability of two key raw materials, carbazole and chloranil."
Summary: An efficient new method for the preparation of triphenodioxazines (TPDOs) using p- chloranil as oxidizing agent in conc.
Different spectrophotometric procedures have been reported for determination of PEH including the formation of ion-pair complexes between the drug and alizarine, alizarine red S, alizarine yellow G or quinalizarine [14], ninhydrin in sulfuric acid [15], nitrobenzene derivates in acetonitrile medium [16], oxidative coupling with 4-aminoantipyrine in the presence of potassium ferricyanide or sodium periodate [17,18], diazotized p-nitroaniline or 2-aminobenzothiazol in alkaline medium [19,20], forming a charge transfer complex with chloranil or haematoxylin in alkaline medium [21,22]= 7and[23].uranyl (II) ion forming a complex at pH.
For both receptors, the largest effect was observed for chloranil ([IC.sub.50] < 1.0 [micro]M) and dichlone ([IC.sub.50] < 1.0 [micro]M), which both contain in their structure a 2,3-dichloro-1,4-quinone.