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ChemicalBook CAS DataBase List ETHYL (S)-3,4-EPOXYBUTANOATE

ETHYL (S)-3,4-EPOXYBUTANOATE synthesis

4synthesis methods
32223-97-5 Synthesis
ETHYL 3,4-EPOXYBUTANOATE

32223-97-5
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Yield:> 99 % ee

Reaction Conditions:

with water;[(1-SS)-(Dibenzoyl-DTA)] at 5 - 20;Product distribution / selectivity;Resolution of racemate;

Steps:

25

0.5 mole of racemic 1,2-epoxy compounds were added with 0.4 mole % of the catalyst prepared in Preparation Example 1 [(1-RR)-(Dibenzoyl-LTA) ] (or Preparation Example 2 [ (1-SS) - (Dibenzoyl- DTA)]) and cooled down to 5 °G Then 5.4 g of water was slowly added here and stirred at 20 °C After fractional distillation under reduced pressure, the target compounds were obtained with more than 99%ee optical purity

References:

WO2008/153280,2008,A1 Location in patent:Page/Page column 39; 40

32223-97-5 Synthesis
ETHYL 3,4-EPOXYBUTANOATE

32223-97-5
13 suppliers
inquiry

112635-76-4 Synthesis
(R)-ethyl 3,4-dihydroxybutanoate

112635-76-4
5 suppliers
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