Results 111 to 120 of about 298 (164)
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REACTION OF HYDRAZONOYL HALIDES WITH 2,4-DIOXOTETRAHYDROTHIAZOLE-5-THIOCARBOXANILIDES
Phosphorus, Sulfur and Silicon and the Related Elements, 1995Abstract Reaction of 3-phenyl-2,4-dioxotetrahydrothiazole-5-thiocarboxanilides 3 with hydrazonoyl halides 4 in N,N-dimethylformamide in the presence of potassium hydroxide yielded the thiadiazoline derivatives 7 and 13. The mechanism of formation of the latter products is discussed.
Abdelgawad Fahmi, Hyam A Abdelhadi
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Reactions and Biological Activities of Hydrazonoyl Halides
Current Organic SynthesisAbstract: This review covers the literature information on the chemistry of hydrazonoyl halides with different substrates to give heterocyclic compounds. From the foregoing survey, it seems this provides a useful and convenient strategy for the synthesis of numerous heterocyclic derivatives.
Jeffrey Wiggins +2 more
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Phosphorus, Sulfur and Silicon and the Related Elements, 2006
N-(chloro-furan-2-yl)methylene-N′-(4-nitrophenyl)hydrazone (I) reacted with triethylphosphite to produce the phosphonate derivative III. The tetrazine derivative VI was produced by the interaction of I with diethyl-phosphite. Hydrazonoyl azide derivatives VIIIa–c reacted with triphenyl phosphine to form the iminophosphorane derivatives Xa–c.
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N-(chloro-furan-2-yl)methylene-N′-(4-nitrophenyl)hydrazone (I) reacted with triethylphosphite to produce the phosphonate derivative III. The tetrazine derivative VI was produced by the interaction of I with diethyl-phosphite. Hydrazonoyl azide derivatives VIIIa–c reacted with triphenyl phosphine to form the iminophosphorane derivatives Xa–c.
exaly +2 more sources
The Utility of Hydrazonoyl Halides in the Synthesis of Bioactive Heterocyclic Compounds
Current Organic Synthesis, 2017Thoraya Farghaly +2 more
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Reactions of hydrazonoyl halides with imidazoles and benzimidazoles
Journal of the Chemical Society, Perkin Transactions 1, 1979Hydrazonoyl 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.
Piero Dalla Croce +2 more
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Hydrazonoyl halides: Useful building blocks for the synthesis of arylazoheterocycles
Journal of Heterocyclic Chemistry, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Ahmad Sami Shawali +1 more
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ChemInform Abstract: The Chemistry of Heterocyclic Hydrazonoyl Halides
ChemInform, 1996AbstractChemInform 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. S. SHAWALI, M. A. ABDALLAH
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The Chemistry of Heterocyclic Hydrazonoyl Halides
1995Publisher Summary Hydrazonoyl halides have emerged as an important class of intermediates, particularly for the synthesis of heterocyclic compounds. This chapter discusses the synthesis, properties, and reactions of Hydrazonoyl Halides. The mechanisms of some of the reactions and the structures of some of the products are outlined.
Ahmad Sami Shawali, Magda Ahmad Abdallah
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ChemInform Abstract: REACTIONS OF HYDRAZONOYL HALIDES WITH IMIDAZOLES AND BENZIMIDAZOLES
Chemischer Informationsdienst, 1979AbstractN‐Methylimidazol und N‐substituierte Benzimidazole werden mit Hydrazonoylhalogeniden in CHCl3 in Gegenwart von NEt3 umgesetzt.
P. DALLA CROCE +2 more
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Microwave‐Assisted Reaction of Hydrazonoyl Halides with Carbodithioic Acid Hydrazones.
ChemInform, 2007AbstractChemInform 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
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