Table 2.
Comparison of the catalytic activity of Pd-ZnO-Scb with reported catalysts in Heck coupling reaction between 4-iodoanisole and styrene.
| Entry | Catalyst | Time (h) | Yield (%) | Ref |
|---|---|---|---|---|
| 1 | Pd NPs/nitrogen-doped mesoporous carbon | 4 | 93 | 50 |
| 2 | MCM-41-SH-Pd(0) | 6 | 95 | 51 |
| 3 | PVC-AE-Pd0 | 5 | 90 | 52 |
| 4 | ‘Si’-2As-Pd(0) | 6 | 92 | 53 |
| 5 | Polyphenol microsphere-supported Pd catalyst | 7 | 90 | 54 |
| 6 | ERGO–Pd | 2 | 94 | 55 |
| 7 | PIC–PdNPs | 20 | 88 | 56 |
| 8 | Pd(0)-Arg-boehmite | 18 | 73 | 57 |
| 9 | Polystyrene supported thiopseudourea Pd(II) complex | 10 | 88 | 58 |
| 10 | Pd NPs supported on poly(N-vinylpyrrolidone)-grafted silica | 2.5 | 95 | 59 |
| 11 | Pd–ZnO–Scb | 1.5 | 95 | Present study |