Table 2.
Enantiomeric ratio, E, and its thermodynamic components for the kinetic resolution of some sec-alcohols catalyzed by Candida antqrctica lipase B
| sec-alcohol | E (298 K) | ΔR-SΔG‡ (298 K) (kJ/mol) | ΔR-SΔH‡ (kJ/mol) | TΔR-SΔS‡ (298 K) (kJ/mol) | ΔR-SΔS‡ (J/mol, K) | TR (K) |
| 1-bromo-2-butanol | 100 | −11.4 | −23.5 ± 1.0 | −12.1 ± 1.0 | −40.7 ± 3.2 | 580 |
| 3-hexanol | 340 | −14.4 | −9.0 ± 0.7 | +5.5 ± 0.7 | +18.3 ± 2.4 | −490 |
| 2-butanola | 8.3 | −5.26 | −10.7 ± 1.4 | −5.4 ± 1.4 | −18.2 ± 4.6 | 590 |
| 3-methyl-2-butanolb | 810 | −16.6 | −24.3 ± 1.1 | −7.7 ± 1.0 | −26.0 ± 3.4 | 940 |
| 3,3-dimethyl-2-butanola | 460 | −15.2 | −20.4 ± 1.3 | −5.2 ± 1.3 | −17.6 ± 4.2 | 1160 |
E at 298 K was calculated from the linear relation between lnE and T−1. Standard errors given were calculated from the linear regression.
a Data from Overbeeke et al. 1999.
b Data partly from Overbeeke et al. 1999.