New Hydrazyl Derivatives with Multiple Properties

Author(s): Madalina Tudose, Daniel Angelescu, Gabriela Ionita, Miron T. Caproiu, Petre Ionita.

Journal Name: Letters in Organic Chemistry

Volume 7 , Issue 2 , 2010

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Abstract:

4-(N,N-diphenylhydrazino)-3,5-dinitrobenzoic acid in reaction with 4-hydroxy-tempo, 4-aminobenzo-15- crown-5, and 1-bromoacetyl-pyrene, yielded the corresponding esters or amides, as yellow compounds. These hydrazines, by oxidation with lead dioxide, converted into the stable hydrazyl free radicals, with a purple-violet color. Same yellow hydrazines in reaction with alkali bases are converted into the corresponding salt of green color. The newly synthesized compounds were characterized by elemental analysis, IR, UV-Vis, 1H- and 13C-NMR, and EPR (where applicable). Acidbase, redox, fluorescence and complexation properties were also studied and discussed.

Keywords: Hydrazyl, radical, tempo, crown, pyrene, EPR

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Article Details

VOLUME: 7
ISSUE: 2
Year: 2010
Page: [182 - 185]
Pages: 4
DOI: 10.2174/157017810790796309
Price: $58