Results 121 to 130 of about 298 (164)
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ChemInform, 1999
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Abdou O. Abdelhamid +2 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Abdou O. Abdelhamid +2 more
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ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. O. ABDELHAMID +2 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. O. ABDELHAMID +2 more
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Regioselectivity in the Reactions of Bis-hydrazonoyl Halides with Pyrimidine-2-thiones
Monatshefte fuer Chemie/Chemical Monthly, 2001Bis-hydrazonoyl chlorides react regioselectively with pyrimidine-2-thiones, which contain a masked thiourea residue, to give the hitherto unknown annelated 2,3-bis-arylhydrazono-thiazoles and 3,3′-bis-1,2,4-triazoles. Reaction of bis-hydrazonoyl chlorides with 2-methylthio derivatives gave only 3,3′-bis-1,2,4-triazoles.
Ahmad S. Shawali +2 more
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Hydrazonoyl Halides as Precursors for New Fused Heterocycles of 5α‐Reductase Inhibitors
Archiv der Pharmazie, 2011AbstractA 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
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Synthesis of Two Isomeric Thiadiazine and Thiazole Derivatives from a Hydrazonoyl Halide
Polycyclic Aromatic Compounds, 2021Thiadiazine and thiazoles have attracted importance due to their broad applicability as biologically active compounds.
Yasair S. Al-Faiyz, Abdelwahed R. Sayed
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Regioselectivity in Reactions of Bis‐Hydrazonoyl Halides with Some Bifunctional Heterocycles
Journal of the Chinese Chemical Society, 2002AbstractBis‐hydrazonoyl chloride 1 reacts regioselectively with 3‐mercapto‐1,2,4‐triazole 2a, 2,3‐dihydro‐3‐thioxo‐1,2,4‐triazin‐5(4H)‐one 2b and 2‐mercaptobenzimidazole 2c to give the hitherto unknown annelated 2,3‐bis‐(phenylhydrazono)thiazoles 6a‐c, respectively.
Ahmad S. Shawali +2 more
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New Convenient Routes of Hydrazonoyl Halides for the Synthesis of Novel Thiazoles and Polythiazoles
Polycyclic Aromatic Compounds, 2020The present effort is to use good organized method for the synthesis of novel thiazoles from the reaction of different α-haloketohydrazonoyl halides with thiosemicarbazones in the basic medium at r...
Abdelwahed R. Sayed +3 more
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Synthesis and Development of Suitable Method for New Thiadiazoles using Hydrazonoyl Halides
Current Organic SynthesisBackground: Hydrazonoyl halides and methylhydrazinecarbodithioate have been generally utilized in the synthesis of heterocycles. Methods: This study describes a new and simple method to prepare new thiadiazoles from the reaction of N-(naphthalen-1-yl)-2-oxopropanehydrazonoyl chloride or ethyl 2-chloro-2-(2-(naphthalen-1-yl)hydrazono)acetate with ...
Munirah F, Alarbash +3 more
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ChemInform Abstract: Synthesis and Reactions of Phosphinimines Using Hydrazonoyl Halides.
ChemInform, 1995AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
H. M. HASSANEEN +4 more
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1,4‐benzothiazine derivatives from 2‐aminobenzenethiol and hydrazonoyl halides
Journal of Heterocyclic Chemistry, 1983Abstract2‐Aminobenzenethiol was condensed with alkyl α‐chlorophenylhydrazonoglyoxylates yielding alkyl 2‐(2‐aminophenylthio)‐2‐arylhydrazonoglyoxylates which were cyclized to the corresponding 2‐arylhydrazono‐2,3‐dihydro‐4H‐1,4‐benzothiazin‐3‐ones.
Nicoletta Almirante, Luciana Forti
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