82315-79-5Relevant academic research and scientific papers
Studies on Condensed Pyrazoles A New Route for Synthesis of Pyrazolopyrazoles
Elnagdi, Mohamed Hilmy,Elghandour, Ahmed Hafez Hussien,Sadek, Kamal Usef,Ramiz, Mahmoud Mohamed Mahfouz
, p. 951 - 954 (2007/10/02)
A novel synthesis of pyrazolopyrazoles 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. - Keywords: Heterocyclic Synthesis, Activated Nit
Reactions with Heterocyclic Diazonium Salts: Novel Synthesis of Pyrazolopyridazines and of Pyrazolopyrazoles
Elnagdi, Mohamed Hilmy,Elfahham, Hassan Attia,Elmoghayar, Mohamed Rifaat Hamza,Sadek, Kamal Usef,Elgemeie, Galal Eldin Hamza
, p. 989 - 992 (2007/10/02)
Diazotised 4-amino-1,5-dimethyl-2-phenylpyrazol-3(2H)-one (1) coupled with active methylene nitriles to yield the corresponding cyanohydrazones (3a-c) and (11).Compounds (3a-c) afforded the 4-(3-aminopyrazol-4-ylidenehydrazino)-1,5-dimethyl-2-phenylpyrazo
