Results 151 to 160 of about 586 (203)

Synthetic Approaches to Novel DPP-IV Inhibitors-A Literature Review. [PDF]

Molecules
Petrov V, Aleksandrova T, Pashev A.
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Design, synthesis, and evaluation of novel triazole-based carbohydrazide derivatives with notable antioxidant activity: an integrated experimental and DFT study. [PDF]

BMC Chem
Rewish NM, Elmorsy MR, Fadda AA, Badawy SA.   +3 more
europepmc   +1 more source

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Review of the synthesis and biological activity of hydrazonoyl halides

Synthetic Communications, 2020
This survey covers the literature data published on the chemistry of synthesis of hydrazonoyl halides within the past 20 years.
Abdelwahed R. Sayed, Sukinah H. Ali, Sobhi M. Gomha, Yasair S. Al-Faiyz   +3 more
openaire   +3 more sources

A new efficient synthesis of pyrazoles from hydrazonoyl halides and β-oxophosphonates

Tetrahedron Letters, 2014
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, Jia-Hai Ye, Haitao Yu, Wenchao Zhang, Xiaolong Wang   +4 more
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Studies on Organophosphorus Compounds XI: The Reaction of Phosphorus Reagents With Hydrazonoyl Halides, Hydrazonoyl Azides, and Shiff's Bases

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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The Utility of Hydrazonoyl Halides in the Synthesis of Bioactive Heterocyclic Compounds

Current Organic Synthesis, 2017
Huda Mahmoud, Magda Abdallah, Thoraya Farghaly   +2 more
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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.
Piero Dalla Croce, Mariateresa Ioannisci, Emanuela Licandro   +2 more
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ChemInform Abstract: The Chemistry of Heterocyclic Hydrazonoyl Halides

ChemInform, 1996
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. S. SHAWALI, M. A. ABDALLAH
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Microwave‐Assisted Reaction of Hydrazonoyl Halides with Carbodithioic Acid Hydrazones.

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
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Hydrazonoyl halides: Useful building blocks for the synthesis of arylazoheterocycles

Journal of Heterocyclic Chemistry, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ahmad Sami Shawali, Mosselhi A. N. Mosselhi   +1 more
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