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HIGHLY FUNCTIONALIZED PYRAZOLINES FROM SYMMETRIC AND ASYMMETRIC 1,2-DISULFONYLHYDRAZINES: A COMBINATION OF EXPERIMENTAL AND DFT PERSPECTIVES

Nasimeh Safari, Gholamhassan Imanzadeh, Roghayyeh Asgharzadeh, Seyyedeh Tahereh Hosseyni, Amir Nasser Shamkhali, Zahra Soltanzadeh
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Abstract


In this work, new pyrazole derivatives were prepared by one-pot three-component reaction emloying symmetric and asymmetric 1,2-disulfonylhydrazines, cyclohexyl isocyanide, and dialkyl acetylenedicarboxylates. Reactions with asymmetric 1,2-disulfonylhydrazines led to two regioisomers, which were distinguished by density functional theory calculations and the major isomer attributed to the energically more stable one.

Keywords


1,2-disulfonylhydrazines; heterocyclic compounds; pyrazolines; density functional theory; one-pot reaction; threecomponent reaction.

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