Green and efficient synthesis of novel bispyrazoles through a tandem Knoevenagel and Michael type reaction using nanowire zinc oxide as a powerful and recyclable catalyst

Authors

KHALIL ESKANDARI
BAHADOR KARAMI
SAEED KHODABAKHSHI
SEYYED JAFAR HOSEINI

DOI

10.3906/kim-1404-54

Abstract

Zinc oxide nanowires (ZnO NWs) were prepared and characterized by scanning electron microscopy, powder X-ray diffraction, and transmission electron microscopy analyses. ZnO NWs were then employed as heterogeneous and recyclable catalyst for green synthesis of some new and known bispyrazole derivatives through a tandem Knoevenagel and Michael type addition reaction of aromatic aldehyde and pyrazolone. The synthetic method is operationally simple and affords product with high yields in short reaction times.

Keywords

Zinc oxide nanowire, bispyrazole, aldehyde, green synthesis, nanocatalyst

First Page

1069

Last Page

1077

Recommended Citation

ESKANDARI, KHALIL; KARAMI, BAHADOR; KHODABAKHSHI, SAEED; and HOSEINI, SEYYED JAFAR (2015) "Green and efficient synthesis of novel bispyrazoles through a tandem Knoevenagel and Michael type reaction using nanowire zinc oxide as a powerful and recyclable catalyst," Turkish Journal of Chemistry: Vol. 39: No. 5, Article 14. https://doi.org/10.3906/kim-1404-54
Available at: https://journals.tubitak.gov.tr/chem/vol39/iss5/14