Hydrazone

Hydrazone

A hydrazone is a class of organic compounds with the structure R2C=NNR2. They are related to ketones and aldehydes by the replacement of the oxygen with the NNR2 functional group. They are formed usually by the action of hydrazine on ketones or aldehydes.

Uses

The formation of aromatic hydrazone derivatives is used to measure the concentration of low molecular weight aldehydes and ketones, e.g. in gas streams. For example, dinitrophenylhydrazine coated onto a silica sorbent is the basis of an adsorption cartridge. The hydrazones are then eluted and analyzed by HPLC using a UV detector.

The compound carbonyl cyanide-p-trifluoromethoxyphenylhydrazone (abbreviated as FCCP) is used to "uncouple" ATP synthesis and reduction of oxygen in oxidative phosphorylation in molecular biology.

Hydrazones are reactants in hydrazone iodination, the Shapiro reaction and the Bamford-Stevens reaction to vinyl compounds.


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  • Hydrazōne — Hydrazōne, s. Phenylhydrazin …   Meyers Großes Konversations-Lexikon

  • hydrazone — ● hydrazone nom féminin Nom générique des composés organiques résultant de la condensation d un aldéhyde ou d une cétone avec une hydrazine …   Encyclopédie Universelle

  • Hydrazone — Hydrazone,   Hydrazin. * * * Hy|dra|zo|ne <Pl.> (Chemie): chemische Verbindungen von Hydrazin mit Aldehyden od. Ketonen …   Universal-Lexikon

  • Hydrazone — Allgemeine Formel von Hydrazonen mit blau markierter Hydrazo Gruppe. Von links nach rechts: Hydrazon (Grundkörper) , Phenylhydrazon und 2,4 Dinitrophenylhydrazon. Als Hydrazone bezeichnet man in der Chemie die von Hydrazin oder Derivaten… …   Deutsch Wikipedia

  • Hydrazone — Structure générale d une hydrazone Les hydrazones sont une famille de composés organiques comportant une structure de type R1R2C=NNH2 Sommaire 1 Synthèse …   Wikipédia en Français

  • hydrazone — hidrazonas statusas T sritis chemija formulė R₂C=NNH₂ atitikmenys: angl. hydrazone rus. гидразон …   Chemijos terminų aiškinamasis žodynas

  • hydrazone — ˈhīdrəˌzōn noun ( s) Etymology: International Scientific Vocabulary hydraz + ketone; originally formed as German hydrazon : any of a class of compounds containing the grouping >C . NNHR formed by the action of hydrazine or a substituted… …   Useful english dictionary

  • Hydrazone iodination — is an organic reaction in which a hydrazone is converted in a vinyl iodide by reaction of iodine and a non nucleophilic base such as DBU [ A new reaction of hydrazones Barton, D. H. R. , R. E. O Brien and S. Sternhell Journal of the Chemical… …   Wikipedia

  • hydrazone — /huy dreuh zohn /, n. any of a class of compounds containing the group > C=NNH2. [1885 90; HYDR 2 + AZ + (KET)ONE] * * * …   Universalium

  • hydrazone — noun any compound, of general formula RC=NNR, formally derived from an aldehyde or ketone by replacing the carbonyl group with =NNH or derivative …   Wiktionary

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