Results 161 to 170 of about 39,725 (197)

ChemInform Abstract: Reactions with Hydrazonoyl Halides. Part 21. Reinvestigation of the Reactions of Hydrazonoyl Bromides with 1,1‐Dicyanothioacetanilide.

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, Hussein F. Zohdi, Nora M. Rateb   +2 more
openaire   +1 more source

ChemInform Abstract: Reactions with Hydrazonoyl Halides. Part 10. Formation of Thiohydrazide, Hydrazonoyl Sulfide and Arylazothiazole Derivatives.

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, H. F. ZOHDI, N. M. RATEB   +2 more
openaire   +1 more source

New Convenient Routes of Hydrazonoyl Halides for the Synthesis of Novel Thiazoles and Polythiazoles

Polycyclic Aromatic Compounds, 2020
The 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, Sobhi M. Gomha, Yasair S. Al-Faiyz, Yasser H. Zaki   +3 more
openaire   +1 more source

Regioselectivity in Reactions of Bis‐Hydrazonoyl Halides with Some Bifunctional Heterocycles

Journal of the Chinese Chemical Society, 2002
AbstractBis‐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, Magda A. Abdallah, Mohie E. M. Zayed   +2 more
openaire   +1 more source

Regioselectivity in the Reactions of Bis-hydrazonoyl Halides with Pyrimidine-2-thiones

Monatshefte fuer Chemie/Chemical Monthly, 2001
Bis-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, Rifaat H. Hilal, Said El-Sheikh   +2 more
openaire   +2 more sources

ChemInform Abstract: Synthesis and Reactions of Phosphinimines Using Hydrazonoyl Halides.

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.
H. M. HASSANEEN, N. M. ELWAN, H. A. ABDELHADI, M. T. FOUAD, M. S. ALGHARIB   +4 more
openaire   +1 more source

1,4‐benzothiazine derivatives from 2‐aminobenzenethiol and hydrazonoyl halides

Journal of Heterocyclic Chemistry, 1983
Abstract2‐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
openaire   +1 more source

Synthesis and Development of Suitable Method for New Thiadiazoles using Hydrazonoyl Halides

Current Organic Synthesis
Background: 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, Yasair S, Al-Faiyz, Jeffrey S, Wiggins, Abdelwahed R, Sayed   +3 more
openaire   +2 more sources

Reaction of hydrazonoyl halides with N‐aryl substituted benzamidines

Journal of Heterocyclic Chemistry, 1980
AbstractThe reaction between hydrazonoyl halides and N‐arylbenzamidines leads to the simultaneous formation of products derived from a substitution and a cycloaddition reaction via two independent paths.
Fulvio Anzani, Piero Dalla Croce, Riccardo Stradi   +2 more
openaire   +1 more source

Hydrazonoyl Halides Precursors to Synthesis of New Thiazole, Thiadiazole, and Benzothiazepine Derivatives

Journal of Heterocyclic Chemistry, 2016
New series of substituted thiazole and thiadiazoles were prepared starting from N′‐(3,4‐dihydronaphthalen‐1(2H)‐ylidene)hydrazinecarbothiohydrazide by reacting with different types of hydrazonoyl chlorides. In addition, 7‐(4‐chlorophenyl)‐5,6,6a,7‐tetrahydrobenzo [b]naphtha‐[1,2‐e][1,4]thiazepine reacted with hydrazonoyl halides to afford a new ...
Fatma A. A. El‐Hag, Sobhi M. Gomha, Thoraya A. Farghaly   +2 more
openaire   +1 more source