Reaktion #444908

Reaktionsgleichung

isopropyl ether

2-bromo-1-(3-chlorophenyl)ethanol

n-caprylic anhydride

vinyl laurate

→

(R)-2-bromo-1-(3-chlorophenyl)ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction mixtures
2. 2
   Sonstigereaction at a temperature of 27° C. for 30 hours
3. 3
   SonstigeAfter the termination of the reaction
4. 4
   Filtrationthe reaction system was subjected to centrifugal filtration
5. 5
   Sonstigeto remove the supernatant
6. 6
   workup.ADDITIONTo the reaction system was then added another batch of 2-bromo-1-(3-chlorophenyl)ethanol
7. 7
   SonstigeThe same reaction

Vorschrift

To a mixture of 100 mg (0.4 mmol) of 2-bromo-1-(3-chlorophenyl)ethanol, 10 mg of TOYOCHIMU LIP (available from Toyobo Co., Ltd.) and 100 mg (0.31 mmol) of n-caprylic anhydride or 61 mg (0.27 mmol) of vinyl laurate as an acylating agent was added isopropyl ether to make the total volume 1 ml. The reaction mixtures were respectively allowed to undergo reaction at a temperature of 27° C. for 30 hours. After the termination of the reaction, the reaction system was subjected to centrifugal filtration to remove the supernatant. To the reaction system was then added another batch of 2-bromo-1-(3-chlorophenyl)ethanol, the acylating agent and diisopropyl ether to make the total volume 1 ml. The same reaction was then repeated twice. The initial rate and total activity at the various steps are set forth in Table 5. The initial rate is represented relative to that at the 1st step as 100%. Activity=total amount of converted BH/enzyme weight.

Quelle