220131-58-8Relevant academic research and scientific papers
Synthesis of new multi-functionalised 1,1'-carbonylbispyrazole derivatives
Mohadeszadeh, Manijeh,Eshghi, Hossein,Saberi, Sattar,Gholizadeh, Mostafa
, p. 220 - 222 (2015)
A new series of multi-functionalised 1,1'-carbonylbispyrazole derivatives were synthesised through cyclisation of pyrazole carbohydrazides with some substituted methylene malononitriles in very good yields. The structures of all synthesised compounds were established on the basis of NMR, IR, MS and elemental analysis.
A new versatile route to the synthesis of a novel series of highly substituted 1,1′-carbonylbispyrazole derivatives
Saberi, Sattar,Eshghi, Hossein,Rahimizadeh, Mohamad,Abnous, Khalil
, p. 889 - 893 (2014)
The reaction of 1H-pyrazole-1-carbohydrazide with various α,β-unsaturated nitriles under suitable conditions leads to a cyclocondensation reaction, thereby providing a novel route for the synthesis of a series of highly substituted 1,1′-carbonylbispyrazole derivatives.
Possible rearrangements during the syntheses of Di- and trisubstituted pyrazoles
Reidlinger, Claudia,Dworczak, Renate,Junek, Hans,Graubaum, Heinz
, p. 1313 - 1318 (2007/10/03)
The reaction of ethoxymethylene malononitrile and ethoxymethylene cyanoacetic acid ethylester with substituted hydrazines to substituted 5-aminopyrazoles is described. The influence of different substituents on possible migrations during the ring closure was studied.
