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

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.

DOI

10.3906/kim-1404-54

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