New Route Synthesis of Thiadiazoles, Bisthiadiazoles, Thiadiazolotriazines, and Pyrazolothiadiazoles Based on Hydrazonoyl Halides and Dihydrazinylthiadiazole [PDF]
Molecules, 2017 Synthesis and characterization of new thiadiazoles, bisthiadiazoles from the reaction of mono- and di-hydrazonoyl halides with various hydrazinecarbodithioate derivatives were studied.
Abdelwahed R. Sayed, Shar Saad Al-Shihry
doaj +8 more sources
A review on bis-hydrazonoyl halides: Recent advances in their synthesis and their diverse synthetic applications leading to bis-heterocycles of biological interest [PDF]
Journal of Advanced Research, 2016 This review covers a summary of the literature data published on the chemistry of bis-hydrazonoyl halides over the last four decades. The biological activities of some of the bis-heterocyclic compounds obtained from these bis-hydrazonoyl halides are also
Ahmad Sami Shawali
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Hydrazonoyl Halides as Precursors for New Fused Heterocycles of 5α‐Reductase Inhibitors [PDF]
Archiv der Pharmazie, 2011 AbstractA new series of benzo[6,7]cyclohepta[1,2‐d]triazolo[4,3‐a]pyrimidines 8a–l was synthesized via reaction of heterocyclic thione 4 or its methyl derivatives 10 with hydrazonoyl halides 5a–l. Also, reaction of compound 4 with a mixture of chloroacetic acid and aromatic aldehyde derivatives gave benzo[6,7]cyclohepta[1,2‐d]thiazolo[3,2‐a]pyrimidin‐3‐
Thoraya A, Farghaly +3 more
semanticscholar +4 more sources
Hydrazonoyl Halides: Their Versatile Biological Activities [PDF]
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
semanticscholar +3 more sources
Reactions with Hydrazonoyl Halides. Part 21. Reinvestigation of the Reactions of Hydrazonoyl Bromides with 1,1-Dicyanothioacetanilide [PDF]
Journal of Chemical Research, 1999 The reaction of C-(benzoyl) -N- (phenyl) formohydrazonoyl bromide with 1,1-dicyanothioacetanilide was reinvestigated. The product was elucidated on the basis of elemental analysis, spectral data and alternative synthesis. Also, reaction of hydrazonoyl halides with different thioanilides were investigated.
Abdou O. Abdelhamid +2 more
semanticscholar +4 more sources
Reactions with Hydrazonoyl Halides. 31. Synthesis of Some New Pyrrolidino[3,4-c]pyrazolines, Pyrazoles, and Pyrazolo[3,4-d]pyridazines [PDF]
Molecules, 2000 Pyrrolidino[3,4-c]pyrazoline and pyrazole derivatives were synthesized via reactions of a substituted hydrazonoyl bromide with N-arylmaleimides and active methylene reagents, respectively. Synthesized pyrazoles were reacted with hydrazine hydrate to give
Nagla A. Ahmed +3 more
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Synthesis and characterization of novel heterocycles based on tetrazine and hydrazonoyl halides [PDF]
European Journal of Chemistry, 2014 The present work describes the preparation and characterization of new pyridazine, thiohydrazonate, bis -pyrazole, bis -triazole and polypyrazoles based on tetrazine and hydrazonoyl halides. The structures of the newly synthesized were elucidated on the basis of their spectral data FT-IR, NMR, Mass and elemental analysis.
Abdelwahed Rashad Sayed +2 more
semanticscholar +4 more sources
A new efficient synthesis of pyrazoles from hydrazonoyl halides and β-oxophosphonates
Tetrahedron Letters, 2014 Abstract A new practical and efficient synthesis of 1,3,5-trisubstituted pyrazoles has been developed by reacting of hydrazonoyl halides with β-oxophosphonates under mild conditions in good yields with excellent regioselectivity. This process employs an addition–elimination sequence. Wide scope, functional group compatibility has been established.
Aixue Sun +4 more
semanticscholar +4 more sources
Hydrazonoyl Halides as Precursors for Synthesis of Novel Bioactive Thiazole and Formazan Derivatives [PDF]
Journal of Chemical Research, 2012 A new series of substituted 4-methyl-5-(arylazo)-2-[ N‘-(6,7,8,9-tetrahydro-benzocyclohepten-5-ylidene)-hydrazino]-thiazoles and 5-(arylhydrazono)-2-[ N‘-(6,7,8,9-tetrahydro-benzocyclohepten-5-ylidene)-hydrazino]-thiazol-4-one were prepared by reaction of hydrazonoyl chlorides with a thiosemicarbazone derivative.
Thoraya A. Farghaly, Eman M.H. Abbas
semanticscholar +3 more sources
ARKIVOC, 2008 This review summarizes research results concerning the reactions of hydrazonoyl halides with heterocyclic thiones reported by us and other research groups from 1991 to mid 2007. It outlines the utility of such reactions in various aspects of heterocyclic
Ahmad Sami Shawali, Thoraya A. Farghaly
doaj +4 more sources