Electron-accepting Properties of 2,3-Dicyano-1,4-benzoquinone and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone

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Spectrophotometric Determination of Drugs Using 2,3-Dichloro 5,6-dicyano p- benzoquinone as Analytical Reagent

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The oxidative dehydrogenation of dihydroarenes catalyzed by 2,3-dichloro-5,6-dicyano-benzoquinone(DDQ) and NaNO(2) with dioxygen is reported. The combination of DDQ and NaNO(2) showed high efficiency and high selectivity, compared with other benzoquinones and anthraquinones, e.g., >99% conversion of 9,10-dihydroanthracene with 99% selectivity for anthracene can be obtained at 120 degrees C unde...

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Potentiometric and Spectrophotometric Determination of Phenothiazine Derivatives Based on Their Titration with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone

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Validated spectrophotometric methods for the determination of amiodarone hydrochloride in commercial dosage forms using p-chloranilic acid and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone.

Two simple, sensitive and economical spectrophotometric methods have been developed for the determination of amiodarone hydrochloride in pure form and commercial dosage form. These methods (A and B) are based on the reaction of amiodarone base as n-electron donor with p-chloranilic acid and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as pi-acceptors to give highly colored complex species wh...

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ژورنال

عنوان ژورنال: Bulletin of the Chemical Society of Japan

سال: 1971

ISSN: 0009-2673,1348-0634

DOI: 10.1246/bcsj.44.1430