Table 4.
Effect of substrate concentration on the asymmetric oxidation of MOPE in C4MIM·PF6/[ChCl][Gly]- buffer biphasic system
| Substrate concentration (mmol/L) | Initial reaction rate (μmol/min) | Reaction time (h) | Conversiona (%) | e.e. b (%) |
|---|---|---|---|---|
| 70.0 | 90.6 | 9.0 | 51.8 | 99.9 |
| 75.0 | 94.9 | 8.5 | 51.1 | 99.9 |
| 80.0 | 124.0 | 7.0 | 51.3 | 99.9 |
| 85.0 | 107.2 | 10.0 | 49.4 | 98.6 |
| 90.0 | 95.8 | 11.0 | 48.8 | 96.4 |
| 95.0 | 85.4 | 12.0 | 47.5 | 91.5 |
Reaction conditions: 4 mL TEA-HCl buffer (100 mmol/L, pH 6.5); 0.3 g/mL immobilized cells; 122 mmol/L acetone; 1 mL [C4MIM][PF6]; 70–95 mmol/L MOPE; 30 °C; 220 rpm
aThe maximum conversion
bThe residue substrate e.e.