Results 181 to 190 of about 126,036 (251)

Hydrazonoyl halides as precursors for synthesis of bioactive heterocyclic compounds via reaction with aryl- and hetaryl-amine.

Current organic chemistry, 2022
A literature survey revealed that a great deal of interest had been focused on the synthesis of functionalized heterocyclic compounds due to their wide range of biological activities such as antimicrobial, antitumor, anti-inflammatory, antiviral ...
T. Farghaly, Sobhi M. Gomha, Amani M. R. Alsaedi, Jihan Qurban, A. A. Nayl, Yasser H. Zaki   +5 more
semanticscholar   +1 more source

SYNTHESIS AND REACTIONS OF PHOSPHINIMINES USING HYDRAZONOYL HALIDES [PDF]

Organic Preparations and Procedures International, 1994
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.
Monther T. Fouad, Huwaida M. E. Hassaneen, H. A. Abdelhadi, Nehal M. Elwan, Mohammed S. Algharib   +4 more
openaire   +2 more sources

Microwave‐Assisted Reaction of Hydrazonoyl Halides with Carbodithioic Acid Hydrazones. [PDF]

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Sayed M. Riyadh, Hamad M. Al-Matar
openaire   +2 more sources

Reactions of hydrazonoyl halides with imidazoles and benzimidazoles

Journal of the Chemical Society, Perkin Transactions 1, 1979
Hydrazonoyl halides upon reaction with N-methylimidazole and N-substituted benzimidazoles yield ring opened 1 : 1 adducts. The action of aqueous sodium hydroxide on these adducts leads to the formation of pyrazin-2-one or quinoxalin-2-one derivatives via ring expansion.
Mariateresa Ioannisci, Emanuela Licandro, Piero Dalla Croce   +2 more
openaire   +2 more sources

ChemInform Abstract: Regioselectivity in the Reactions of Bis‐hydrazonoyl Halides with Pyrimidine‐2‐thiones. [PDF]

ChemInform, 2001
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.
Said M. El-Sheikh, Rifaat Hilal, Ahmad S. Shawali   +2 more
openaire   +2 more sources

Dehydrohalogenation of Hydrazonoyl Halides

, 2004
Shuji Kanemasa
openalex   +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.
Riccardo Stradi, F. Anzani, P. Dalla Croce   +2 more
openaire   +2 more sources

Chemoselectivity in reactions of hydrazonoyl halides with ethyl 2(3H)‐permidinylideneacetate

, 2016
Ethyl 2(3H)-permidinylideneacetate 1 reacted with C-aryl-N-arylmethanehydrazonoyl and C-ethoxycarbonyl-N-arylmethanehydrazonoyl chlorides 2 and 7 in different ways yielding 2-(pyrazoliden-4-yl) perimidines 5 and substituted pyrrolo[1,2-a] perimidines 9 ...
A. S. Shawali, T. Farghaly, T. Nawar
semanticscholar   +2 more sources

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.
Magda A. Abdallah, Mohie E. M. Zayed, Ahmad S. Shawali   +2 more
openaire   +2 more sources

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.
Hussein F. Zohdi, Abdou O. Abdelhamid, Nora M. Rateb   +2 more
openaire   +2 more sources