Asymmetric Michael addition of dimethyl malonate to a series of azachalcone derivatives in the presence of copper–amyloid complexes of P01a.
| ||||
|---|---|---|---|---|
| Entry | R | 2 | Yield (%) | ee (%) |
| 1 | Ph | 2a | 78 | 38 |
| 2 | 4-CH3-C6H5 | 2b | 75 | 31 |
| 3 | 4-NO2-C6H5 | 2c | 29 | 29 |
| 4 | 4-Br-C6H5 | 2d | 26 | 31 |
| 5 | 2-Naphthyl | 2e | 41 | 37 |
Reaction conditions: 475 μM amyloid-like fibrils and 95 μM CuSO4 in 20 mM MOPS buffer (pH 6.5) for 1 day at 0 °C. The yields and ee values are the average from 3 experiments.