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ChemicalBook CAS DataBase List DL-sec-Butyl acetate
105-46-4

DL-sec-Butyl acetate synthesis

11synthesis methods
sec-Butyl acetate is prepared from sec-butanol and acetic anhydride. It is also prepared from 2-butene under pressure and heated to 115–120C with an excess of glacial acetic acid containing 10% sulfuric acid.
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Yield:99.9 % ee ， 77 % ee

Reaction Conditions:

with Candida antarctica lipase immobilized on acrylic resine in di-isopropyl ether at 40; for 24 h;Enzymatic reaction;enantioselective reaction;Solvent;

Steps:

2.5 General Procedure for the Alcoholysis of Racemic Acetates (1a-7a) with Candida antarctica- B lipase

General procedure: To 1 mmol of the racemic acetates (1a-7a) dissolved in Scheme 1 Possible pathways for enzymatic deacetylation of acetate 2 mL of organic solvent, 2 mmol of the appropriate alcohol and 12 mg of CAL-B, are added. The suspension was stirred at 40 °C for 24 h. The reaction mixture is filtered on Celite and concentrated in vacuo. The remaining acetate and the producing alcohol were separated by chromatography on silica gel (petroleum ether/ethyl acetate: 80/20) and analyzed by chiral GC. The same procedure was followed for the reactions in the presence of 60 mg of molecular sieves 4 ?.

References:

Zadi, Amna;Merabet-Khelassi, Mounia;Aribi-Zouioueche, Louisa [Catalysis Letters,2015,vol. 145,# 4,art. no. 1470,p. 1054 - 1061]

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