Effect of catalyst loading on catalysis using catalysts 2 and 3a.
| Catalyst loading (mol%) | Conversionb % catalyst 2 | Conversion % catalyst 3 |
|---|---|---|
| 3 | 100 | 95 |
| 1.5 | 100 | 90 |
| 0.8 | 100 | 72 |
| 0.4 | 100 | 58 |
| 0.2 | 98 | — |
| 0.1 | 92 | — |
| 0.05 | 80 | — |
| 0.01 | 72 | — |
a
4-Iodobenzaldehyde (50 mg, 0.22 mmol, 1 eq.), 4-tert-butylphenylacetylene (41.7 mg, 0.26 mmol, 1.2 eq.), potassium carbonate (91.1 mg, 0.66 mmol, 3 eq.) and Ni–Pd/MWCNTs nanoparticles (catalyst 2 and 3) (as indicated) in a mixture of 4 mL of H2O : EtOH (1 : 1) were heated at 120 °C for 20 minutes using Monowave 50 heating reactor.
b
Conversion % were determined by GC-MS.