What are the different methods for synthesis of pure pyrazoline !?

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Riaz A. Khan

Which of the pyrazoline derivatives or only pyrazoline synthesis, are you interested?

Check for yourself:

http://www.organic-chemistry.org/synthesis/heterocycles/pyrazolines.shtm

Ch Kiran Kumar

The best and more selective method for the preparation is first prepare suitable chalcone derivative and subsequent reaction with substituted hydrazines under basic or acidic conditions.