Catalyst, ligand and additive screen for the DaPdNP catalysed Suzuki Miyaura reactiona.
| ||||
|---|---|---|---|---|
| Entry | Catalyst | Ligand | Additive | Yield (% ±SD) |
| 1 | DaPdNP | — | — | 34 |
| 2 | DaPdNP | PPh3 | — | 24 |
| 3 | DaPdNP | JohnPhos | — | 38 |
| 4 | DaPdNP | SPhos | — | 33 |
| 5 | DaPdNP | XPhos | — | 40 |
| 6 | DaPdNP | sSPhos | — | 6 |
| 7 | DaPdNP | AmPyol | — | 19 |
| 8 | DaPdNP | TMG | — | 62 |
| 9 | DaPdNP | — | Green tea polyphenols | 26 |
| 10b | DaPdNP | — | — | 0 |
| 11 | cPdNP | — | — | <1 |
| 12 | cPdNP | XPhos | — | <1 |
| 13 | cPdNP | TMG | — | <1 |
| 14 | Pd/C | — | — | <1 |
| 15 | Pd/C | XPhos | — | 2 |
| 16 | Pd/C | TMG | — | 5 |
| 17 | DaPdNP | — | TPGS-750-Mc | 75 |
| 18 | DaPdNP | — | TPGS-1000c | >99 |
Reactions were performed using 1 (25 mM), 2 (30 mM), K2CO3 (30 mM), Pd catalyst (0.25 mM) and ligand (2.5 mM) in sealed tubes under an atmosphere of air. Product concentrations were determined by 1H NMR spectroscopy relative to an internal standard of TMB. All data shown is an average of three experiments to one standard deviation.
Polymer-supported iodobenzoic acid was used.
2% w/vol.
