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ChemicalBook CAS DataBase List Ethyl 2-methylbutyrate
7452-79-1

Ethyl 2-methylbutyrate synthesis

10synthesis methods
The racemic form can be prepared catalytically by several methods: from butene and Ni(CO)4 under nitrogen in ethyl alcohol/acetic acid solution, or from ethylene and CO under pressure using HBF4 and HF as catalysts.
-

Yield:-

Reaction Conditions:

with palladium(II) trifluoroacetate;toluene-4-sulfonic acid;DPEPhos in tetrahydrofuran at 30; under 150015 Torr;Inert atmosphere;

Steps:

2 Example 2

Measure 30mmol of 2-butene, 0.15mmol of p-toluenesulfonic acid, 15mmol of bis(2-diphenylphosphinephenyl)ether, 15mmol of palladium trifluoroacetate, 3ml of ethanol and 27ml of tetrahydrofuran, and add them together to a 100ml reaction kettle, and use Nitrogen was replaced three times, and CO was replaced three times, filled with 20MPa CO, stirred and reacted at 30°C for 24 hours, cooled, added internal standard (1-hexanol) 10mmol, analyzed by gas chromatography, the conversion rate of 2-butene was 92 %, the selectivity of valerate is 96%.

References:

CN114957006,2022,A Location in patent:Paragraph 0015-0016

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