Research Article

ZnO Nanoparticles as an Efficient, Heterogeneous, Reusable, and Ecofriendly Catalyst for Four-Component One-Pot Green Synthesis of Pyranopyrazole Derivatives in Water

Table 5

Optimization of the ZnO nanoparticle catalyzed model reaction for synthesis of 5e.

EntryCatalyst (mol %) Yield (%)

1375
2682
3989