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 +9 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
doaj +4 more sources
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.
Argyropoulos +5 more
core +7 more sources
Hydrazonoyl Halides as Precursors for New Fused Heterocycles of 5α‐Reductase Inhibitors [PDF]
ChemInform, 2011 AbstractFused heterocycles (III), (V), and (VII) are synthesized by reaction of thione (I) or its methyl derivative with hydrazonoyl halides of type (II).
Thoraya A. Farghaly +3 more
semanticscholar +5 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 Samy
semanticscholar +4 more sources
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 +4 more sources
Reactions with hydrazonoyl halides 66: Synthesis of some new 1,3,4-thiadiazoles, triazolino[4,3-a]pyrimidines and isoxazolo[3,4-d]pyridazines containing coumarin moiety [PDF]
, 2011 2,3-Dihydro-1,3,4-thiadiazoles, triazolino[4,3-a]pyrimidines, isoxazoles and isoxazolo[3,4-d]pyridazines containing coumarin moities were synthesized from the reactions of methyl (or benzyl) carbodithioate, pyrimidine-2-thione and 3-(3-(dimethylamino ...
Abdelhamid, Abdou Osman +2 more
core +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 +4 more sources
A new efficient synthesis of pyrazoles from hydrazonoyl halides and β-oxophosphonates
Tetrahedron Letters, 2013 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 +5 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