Synthesis and antimicrobial activities of some novel bis-pyrazole derivatives containing a hydrophosphoryl unit

Vilsmeier-Haack reaction conditions were applied on some methyl ketone aryl phosphonicdihydrazones to yield some interesting bis-pyrazole derivatives containing a hydro-phosphoryl unit. Bis-{4-formyl-3-aryl-1H-pyrazol-1-yl}phosphine oxides (4a,b) were condensed with some nucleophiles such as aniline...

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Veröffentlicht in:European journal of chemistry 2011-03, Vol.2 (1), p.25-35
Hauptverfasser: Abdel-Aziz, Salah Abdel-Ghaffar, Ali, Tarik El-Sayed, El-Mahdy, Kamilia Mohamed, Abdel-Karim, Somaia Mohamed
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container_title European journal of chemistry
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creator Abdel-Aziz, Salah Abdel-Ghaffar
Ali, Tarik El-Sayed
El-Mahdy, Kamilia Mohamed
Abdel-Karim, Somaia Mohamed
description Vilsmeier-Haack reaction conditions were applied on some methyl ketone aryl phosphonicdihydrazones to yield some interesting bis-pyrazole derivatives containing a hydro-phosphoryl unit. Bis-{4-formyl-3-aryl-1H-pyrazol-1-yl}phosphine oxides (4a,b) were condensed with some nucleophiles such as aniline, phenacyltriphenylphosphonium bromide and 4-phenylthiosemicarbazide followed by treatment with thioglycolic acid, diethyl phosphite and/or acetic anhydride to yield a novel class of bis-pyrazoles containing sulfur and phosphorus derivatives. Most of the newly synthesized compounds were evaluated for their in vitro antimicrobial activities.
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title Synthesis and antimicrobial activities of some novel bis-pyrazole derivatives containing a hydrophosphoryl unit
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