Amidrazones in the Synthesis of 1H-1,2,4-Triazoles
作者:Ashraf A. Aly、Moshen A.-M. Gomaa、Ahmed M. Nour El-Din、Magda S. Fahmi
DOI:10.1515/znb-2006-1009
日期:2006.10.1
The syntheses of various 2-(4-aryl-2,4-dihydro-3-phenyl-1,2,4-triazol-3-ylidene)indan-1,3-diones are reported. The key to their successful synthesis depends on the reaction of amidrazones 1a - f with 2-(1,3-dioxoindan-2-ylidene)malononitrile (2).
Catalyst-free direct synthesis of β-enaminones through reaction of benzohydrazonamides with cyclic 1,3-diketones: Access to exocyclic β-enaminones
作者:Mohsen A.-M. Gomaa、Georg Manolikakes、Yu Sun、Doaa K. Hassan
DOI:10.1080/00397911.2019.1658785
日期:2019.11.17
Abstract The reaction of benzohydrazonamides with cyclic 1,3-diketones affords β-enaminones in good to excellent yields (14 examples, 69 − 89%). This transformation proceeds under mild reaction conditions (ethyl acetate, 25 °C, 12 − 24 h) in the absence of any catalyst and gives access to novel nitrogen-rich organic scaffolds. Graphical Abstract
Synthesis and characterization of<i>N′</i>-(11<i>H</i>-indeno[1,2-<i>b</i>]quinoxalin-11-ylidene)benzohydrazonamides as potential antimicrobial agents
作者:Mohsen A.-M. Gomaa、Momein H. El-Katatny、Huda A. Ali
DOI:10.1080/00397911.2020.1786122
日期:2020.9.16
Abstract A series of new N′-(11H-indeno[1,2-b]quinoxalin-11-ylidene)benzohydrazonamides 3a–3j was synthesized in excellent yields from the reaction of N3-substituted benzohydrazonamides 1 and 2-(11H-indeno[1,2-b]quinoxalin-11-ylidene)malononitrile 2 in dichloromethane or with 11H-indeno[1,2-b]quinoxalin-11-one 4 in ethyl acetate at ambient temperature. The new compounds have been characterized and
Rapid and Facile Synthesis of Spiro[Indole-3,3′-[1,2,4]Triazol]-2(1H)-Ones
作者:Ashraf M. Mohamed、Musaed A. Alsharari、Ashraf A. Aly
DOI:10.3184/030823410x12698845637794
日期:2010.4
Various 4′-aryl-5′-phenyl-2′,4′-dihydrospiro[indole-3,3′-[1,2,4]triazol]-2(1H)-ones have been synthesised by reaction of amidrazones with 2-(2-oxoindolin-3-ylidene)malononitrile.