تفاعل #1178409

معادلة التفاعل

sodium formate

acetophenone

→

(S)-phenylethanol

المردود 96.4%

المذيبات

formic acid

ظروف التفاعل

المعالجة

1. 1
   أخرىCulture fluid was obtained
2. 2
   workup.ADDITIONwas added dropwise to the mixture
3. 3
   أخرىAfter the reaction
4. 4
   استخلاصthe reaction mixture was extracted with toluene
5. 5
   تجفيفwas dried over anhydrous sodium sulfate
6. 6
   أخرىRemoval of sodium sulfate, and evaporation of organic solvents from the organic layer under reduced pressure

الإجراء التجريبي

Culture fluid was obtained by cultivating E. coli HB101 (pNCMFT) in a similar manner to Example 9. In a 100-mL portion of the culture fluid, 2.8 g of sodium formate, 3 mg of NAD+, and 10 g of acetophenone were added, and the mixture was stirred at 30° C. for 20 hours while controlling the pH of the reaction mixture to 6.0 with 5 N aqueous formic acid, which was added dropwise to the mixture. After the reaction, the reaction mixture was extracted with toluene, and combined organic layer was dried over anhydrous sodium sulfate. Removal of sodium sulfate, and evaporation of organic solvents from the organic layer under reduced pressure yielded 9.8 g of (S)-phenylethanol. The product (S)-phenylethanol was analyzed in accordance with the [Analysis condition (1) for gas chromatography] as described above, and found that the optical purity of the product was 99.9% e.e. or higher.

المصدر