Change language
English Deutsch
Change currency
€ EUR £ GBP $ USD
BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Studies on Condensed Pyrazoles. A New Route for Synthesis of Pyrazolo[4,3-c]pyrazoles

  • Mohamed Hilmy Elnagdi , Ahmed Hafez Hussien Elghandour , Kamal Usef Sadek and Mahmoud Mohamed Mahfouz Ramiz
From the journal Zeitschrift für Naturforschung B
https://doi.org/10.1515/znb-1989-0816
Download article (PDF)

A novel synthesis of pyrazolo[4,3-c]pyrazoles via 1,5-dipolar cyclization of products of coupling of 2,3-dimethyl-1-phenyl-5-oxo-3-pyrazolin-4-diazonium chloride with active methylene reagents is reported.

Received: 1988-7-8
Revised: 1988-11-2
Published Online: 2014-6-2
Published in Print: 1989-8-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Download article (PDF)
From the journal
Zeitschrift für Naturforschung B
Zeitschrift für Naturforschung B
Volume 44 Issue 8

Journal and Issue

Articles in the same Issue

Verteilung und Valenz der Kationen in Spinellsystemen mit Eisen und Vanadium, VI Gitterkonstanten, Mößbauer-Spektren und elektronische Eigenschaften der Mischkristallreihe ZnFeVO4—Fe2VO4 / Distribution and Valence of the Cations in Spinel Systems with Iron and Vanadium, VI Lattice Constants, Mössbauer Spectra and Electronic Properties of the Solid Solution ZnFeVO4—Fe2VO4
Verteilung und Valenz der Kationen in Spinellsystemen mit Eisen und Vanadium, VII Die Nichtstöchiometrie des Spinells FeV2O4 / Distribution and Valence of the Cations in Spinel Systems with Iron and Vanadium, VII The Nonstoichiometric Spinel FeV2O4
Ein Beitrag zur Synthese neuer chiraler Phosphanliganden / Synthesis of a New Chiral Phosphine Ligand
Synthese neuer optisch aktiver Rh-Komplexe: Die Kristallstruktur von [(5S)-3,4-Bis(diphenylphosphino)-5-menthoxy-2(5H)-furanon](1,5-cyclooctadien)rhodium-hexafluorophosphat / Synthesis of New Optically Active Rh-Complexes: The Crystal Structure of [(5S)-3,4-Bis(diphenylphosphino)-5-menthoxy-2(5 H)-furanone](1,5-cyclooctadiene)rhodium-hexafluorophosphate
Synthese, IR-Spektrum und Kristallstruktur des Amidinatokomplexes [Na(15-Krone-5)][Ph—C(NSiMe3)2SnCl3F] / Synthesis, IR Spectrum, and Crystal Structure of the Amidinato Complex [Na(15-Crown-5)][Ph — C(NSiMe3)2SnCl3F]
Zur Komplexchemie der Alkalimetalle: Kristallstruktur von RbLiS / On the Complex Chemistry of the Alkali Metals: The Crystal Structure of RbLiS
Hexacyanomanganate(III) mit Kryolithstruktur: Cs2NaMn(CN)6 und Cs2KMn(CN)6 / Hexacyanomanganates(III) with Cryolite Type Structure: Cs2NaMn(CN)6 and Cs2KMn(CN)6
Substitutionsreaktionen an der N-Chlornitrenogruppe des [WCl4(NCl)]2. Die Kristallstrukturen von [CH3CN—WCl4(NSMe)] und [WNCl3 · NC—CH3]4 / Substitution Reactions at the N-Chloronitreno Group of [WCl4(NCl)]2. The Crystal Structures of [CH3CN—WCl4(NSMe)] and [WNCl3 · NC—CH3]4
Bildung und Struktur von Bis(2,6-dimethoxyphenyl)nitramin, [2,6-(MeO)2C6H3]2NNO2 / Formation and Structure of Bis(2,6-dimethoxyphenyl)nitramine, [2,6-(MeO)2C6H3]2NNO2
Bor-stabilisierte Ν,Ο-Carbene, II Röntgenstrukturanalyse von (trans-4,5-Dimethyloxazolidin-2-yliden)triphenylbor und N-Alkyliengen / Boron Stabilized Ν,Ο-Carbenes, II X-Ray Structure of (trans-4,5-Dimethyloxazolidin-2-ylidene)triphenylboron and N-Alkylations
Valence Force Constants of N-Benzylideneanilines
Zur Kenntnis der Hydroxidhalogenide des Bariums. Kristallstruktur und Schwingungsspektren von Ba[O(H,D)]X · 2 (H,D)2O (X = Cl, Br) / Barium Hydroxide Halides. Crystal Structure and Vibrational Spectra of Ba[O(H,D)]X · 2 (H,D)2O (X = Cl, Br)
Synthese und Strukturuntersuchungen von Iodocupraten(I) X. [Co(cp)2]2[CuI3] und [Co(cp)2][Cu2I3] = 1/9{[Co(C(cp)2]9[Cu6I11]∞2[(Cu6I8)2]} [1] / Syntheses and Structure Analyses of Iodocuprates(I) X. [Co(cp)2]2[CuI3] and [Co(cp)2][Cu2I3] = 1/9{[Co(cp)2]9[Cu6I11]∞2[(Cu6I8)2]} [1]
Synthese, Struktur und thermisches Verhalten von Thiophosphorsäuretriamid SP(NH2)3 [1] / Synthesis, Structure, and Thermal Behaviour of Phosphorothionic Triamide SP(ΝΗ2)3 [1]
Thiobenzamid-thiobenzimid-bromo-kupfer(II), [Cu(PhCSNH2)(PhCSNH)Br]2 / Thiobenzamide-thiobenzimide-bromo-copper(II), [Cu(PhCSNH2)(PhCSNH)Br]2
Studies on Condensed Pyrazoles. A New Route for Synthesis of Pyrazolo[4,3-c]pyrazoles
Effect of Urea and Organic Solvents on the Mitochondrial F1 ATPase
Peptide Free-Radicals: The Reactions of OH Radicals with Glycine Anhydride and its Methyl Derivatives Sarcosine and Alanine Anhydride. A Pulse Radiolysis and Product Study
Zur Stereochemie von Pterocarpanoiden — eine theoretische Studie / On the Stereochemistry of Pterocarpanoids — a Theoretical Study
Synthesis and Activity of Juvenile Hormone Analogues (JHA), Part II
Notizen: Chirale Ruthenium-Halbsandwichkomplexe des Schwefelmonoxids und Schwefeldioxids [1] / Chiral Ruthenium Halfsandwich Complexes of Sulfur Monoxide and Sulfur Dioxide [1]
Notizen: Refinement of the Crystal Structures of CuTe2Br and CuTe2I
Notizen: Nukleophile Addition von Alkoxid an einen kationischen Ruthenium-Schwefeldioxid-Komplex [1] / Nucleophilic Addition of Alkoxide to a Cationic Ruthenium Sulfur Dioxide Complex [1]
Notizen: Austausch von Nitrit- gegen Bromidanionen in Na3NO3 / Replacement of Nitrite by Bromide Anions in Na3NO3
Downloaded on 31.5.2024 from https://www.degruyter.com/document/doi/10.1515/znb-1989-0816/html
Scroll to top button