Results 31 to 40 of about 586 (203)
Applied Sciences, 2021 The reaction of 2-(1-(2-(2-(4-methoxybenzylidene)hydrazinyl)-4-methylthiazol-5-yl)ethylidene)hydrazinecarbothioamide with a range of hydrazonoyl chlorides and α-halo-compounds yielded three new series of thiazole derivatives.
Laila A. Al-Mutabagani +7 more
doaj +1 more source
Hydrazonoyl Halides: Their Versatile Biological Activities
The Open Bioactive Compounds Journal, 2009 The various biological activities namely anthelmintic, antiarthropodal, antiviral, antimicrobial, herbicidal, antisarcoptic, acaricidal, insecticidal and miticidal activities exhibited by the hydrazonoyl halides are surveyed. Also, the uses of such halides as pesticides, weed controlling and antihypertensive agents as well as lipoxygenase and cyclo ...
Ahmad S.Shawali, Nevien A.Samy
openaire +1 more source
A Novel Synthesis of 1,2,4-Triazolopteridines
Molecules, 2002 Reaction of 1,2-dihydro-2-thioxopteridin-4(3H)-one, 6,7-dimethyl-1,2-dihydro-2-thioxopteridin-4(3H)-one and 6,7-diphenyl-1,2-dihydro-2-thioxopteridin-4(3H)-one with hydrazonoyl halides affords the title compounds in good yields.
Hamdi M. Hassaneen +2 more
doaj +1 more source
Reactions with hydrazonoyl halides 65: Synthesis of some new 1,3,4-thiadiazoles and triazolino[4,3-a]pyrimidines containing pyrazole moiety [PDF]
, 2011 2,3-Dihydro-1,3,4-thiadiazoles, and triazolino[4,3-a]pyrimidines containing pyrazole moieties were prepared from the reaction of alkyl 2-[1-(4-cyano-1,5-diphenyl-1H-pyrazol-3-yl)ethylidene]hydrazinecarbodithioate and pyrimidine-2-thione derivatives with ...
Abdelhamid, Abdou Osman +2 more
core +1 more source
Synthesis of New 3-Heteroarylindoles as Potential Anticancer Agents
Molecules, 2016 2-(3-(1H-Indol-3-yl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-substituted-5-(substituted diazenyl)thiazoles and 2-(1H-indol-3-yl)-9-substituted-4,7-disubstituted pyrido[3,2-e][1,2,4]triazolo[4,3-a]pyrimidin-5(7H)-ones were synthesized via reaction of ...
Abdou O. Abdelhamid +3 more
doaj +1 more source
Hydrazonoyl Chlorides as Precursors for Synthesis of Novel Bis-Pyrrole Derivatives
Molecules, 2016 A convenient synthesis of some novel bis-pyrrole derivatives via hydrazonoyl halides is described. Antimicrobial evaluation of some selected examples of the synthesized products was carried out.
Nabila Abdelshafy Kheder
doaj +1 more source
Study on regioselective synthesis of bioactive bis-spiropyrazolines using molecular orbital calculations [PDF]
, 2014 1,3-Dipolar cycloaddition reaction of (2E,2'E)-2,2'-(1,4-phenylene bis(methanylylidene)) bis(3,4-dihydronaphthalen-1(2H)-one) (3) and 2,2'-(1,4-phenylene bis(methanylylidene)) bis(1H-indene-1,3(2H)-dione) (8) with a variety of nitrilimines, generated in ...
Abbas, Ikhlass Mohamed +3 more
core +1 more source
BMC Chemistry, 2019 Background Pyrazolines show different biological activities. In recent years, interest in the chemistry of hydrazonoyl halides has been renewed. 1,3,4-Thiadiazoles are one of the most common heterocyclic pharmacophores with a wide range of biological ...
Abdou O. Abdelhamid +5 more
doaj +1 more source
Ecofriendly regioselective one-pot synthesis of chromeno[4,3-d][1,2,4]triazolo[4,3-a]pyrimidine derivatives [PDF]
, 2013 The reaction between 2-mercapto-3H-chromeno[4,3-d]pyrimidine-4,5-dione (1) or its 2-methylthio derivative (7) with hydrazonoyl halides (2) in dioxane under ultrasound irradiation in the presence of chitosan yielded chromeno[4,3-d][1,2,4]triazolo[4,3-a ...
Badrey, Mohamed Gomaa +1 more
core +1 more source
Synthesis, characterization and docking study of novel pyrimidine derivatives as anticancer agents [PDF]
, 2020 New compounds 5 and 9 using DNA bases e.g. Adenine 1 and Guanine 6 derivatives have been synthesized. The use of simple methods to synthesize compounds 5 and 9 were done using pyrimidine as an alternative DNA base ring.
El-Saidi, Manal Mohamed Talaat +5 more
core +1 more source