Abstract
Covalently supportedSulfonic and acetic acids ontopolypyrrole asgreen, cheap and recoverablesolid acid catalysts for the synthesis of 4H-pyrano[2,3-c]pyrazoles
Elham Fadovipoor1,*,Simin Nazari1, Amanollah Zarei Ahmady2, Maryam Gorjizadeh3, Mozhgan Afshari3,Mosadegh Keshavarz4,*
DOI : http://dx.doi.org/10.13005/ojc/310215
Abstract:
Sulfonatedpolypyrrolenanospheres and polypyrrole N-functionalized acetic acid were synthesized. The catalytic efficiency of the prepared solid acid catalysts for the synthesis of 4H-pyrano[2,3-c]pyrazolesderivatives was evaluated and compared. The results showed that, regarding the time and yield of the products, the sulfonatedpolypyrrolenanospheres catalyst has better catalytic activity than polypyrrole N-functionalized acetic acid during first andsecond runs but shows a slight decline in its activityduring thethird run.
Keywords:Polypyrrole N-functionalized acetic acid; Sulfonatedpolypyrrolenanospheres; Nano; solid catalyst; Heterogeneous; 4H-pyrano[2,3-c]pyrazoles
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