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5
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0000377492
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and the literature cited therein
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For enhancement of the enantioselectivity of a lipase-catalyzed hydrolysis, see: a) Itoh, T.; Mitsukura, K.; Kanphai, W.; Takagi, Y.; Kihara, H.; Tsukube, H. J. Org. Chem. 1997, 62, 9165-9172 and the literature cited therein.
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Nakamura, K.; Takenaka, K.; Ohno, A. Tetrahedron: Asymmetry 1998, 9, 4429-4439.
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Ohno, A.3
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18
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0347613657
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For the effect of the chain length of carboxylic acids on the enantioselectivity of lipase-catalyzed esterification, see: Guo, Z. -W.; Wu, S. -H.; Chen, C. -S.; Girdaukas, G.; Sih, C. J. J. Am. Chem. Soc. 1999, 112, 4942-4945.
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Sih, C.J.5
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0042742891
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For the lipase-catalyzed transesterification with benzoic acid esters as the acyl donor, see: a) Vänttinen, E.; Kanerva, L. T. Tetrahedron: Asymmetry 1997, 8, 923-933.
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Tetrahedron: Asymmetry
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Vänttinen, E.1
Kanerva, L.T.2
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b) Tokuyama, S.; Yamano, T.; Aoki, I.; Takanohashi, K.; Nakahama, K. Chem. Lett. 1993, 741-744.
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Tokuyama, S.1
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Nakahama, K.5
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21
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0013603125
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Ref. 8
-
c) Ref. 8.
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-
-
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22
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0013620775
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-
Ref. 9b
-
d) Ref. 9b.
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-
-
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23
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0013575880
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-
Ref. 9d
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e) Ref. 9d.
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-
-
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24
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84990106353
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-
Although Chen et al. employed 5-phenylpentanoic acid in the lipase-catalyzed asymmetric esterification of 1-phenyl-1-ethanol, the reaction rate was too late to calculate the E value. See: Chen, C. -S.; Sih, C. J. Angew. Chem. Int. Ed. Eng. 1989, 28, 695-707.
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Angew. Chem. Int. Ed. Eng.
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Chen, C.-S.1
Sih, C.J.2
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25
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0021970013
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-
Although Koshiro et al. employed either 5-phenylpentanoic acid or 11-phenylundecanoic acid in the lipase-catalyzed asymmetric esterification of menthol, the E values were not evaluated. See: Koshiro, S.; Sonomoto, K.; Tanaka, A.; Fukui, S. J. Biotechnol. 1985, 2, 47-57.
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Koshiro, S.1
Sonomoto, K.2
Tanaka, A.3
Fukui, S.J.4
-
26
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0000676327
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E = 9.8 for the transesterification with vinyl acetate, see: Chen, C. -S.; Liu, Y. -C. J. Org. Chem. 1991, 56, 1966-1968. E = 13 for the hydrolysis of the corresponding ester, see: Matsumoto, T.; Takeda, Y.; Iwata, E.; Sakamoto, M.; Ishida, T. Chem. Pharm. Bull. 1994, 42, 1191-1197.
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(1991)
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Chen, C.-S.1
Liu, Y.-C.2
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27
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0028339854
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E = 9.8 for the transesterification with vinyl acetate, see: Chen, C. -S.; Liu, Y. -C. J. Org. Chem. 1991, 56, 1966-1968. E = 13 for the hydrolysis of the corresponding ester, see: Matsumoto, T.; Takeda, Y.; Iwata, E.; Sakamoto, M.; Ishida, T. Chem. Pharm. Bull. 1994, 42, 1191-1197.
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Matsumoto, T.1
Takeda, Y.2
Iwata, E.3
Sakamoto, M.4
Ishida, T.5
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29
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0013603827
-
-
note
-
The resolution of (=)-1 was also carried out at 30 °C. For example, E value with vinyl 3-phenylpropanoate (E = 18) was six times larger than that with vinyl acetate (E = 3). This ratio was almost the same value as that at 10 °C. However, some reactions proceeded very fast at 30 °C. Therefore, we decided to evaluate the resolution at 10 °C more exactly.
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-
-
-
30
-
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0013628401
-
-
Although an initial rate should be determined using pure enantiomers, we used the rates calculated from the racemic 2-phenyl-1-propanol results. Therefore, the relative rates are rough relative initial rates.
-
Although an initial rate should be determined using pure enantiomers, we used the rates calculated from the racemic 2-phenyl-1-propanol results. Therefore, the relative rates are rough relative initial rates.
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