Reacción #54593

Ecuación de reacción

Ethyl 4-aminobutanoate hydrochloride

2,5-dimethoxy tetrahydrofuran

→

ethyl 4-(1-pyrryl)butanoate

Disolventes

acetic acid

acetic acid

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaThe mixture is heated until the solution
2. 2
   TemperaturaThe solution is refluxed for an additional two minutes
3. 3
   Otroevaporated
4. 4
   workup.DISTILLATIONThe residue is distilled

Procedimiento

Ethyl 4-aminobutanoate hydrochloride (0.2 mole) is added to 300 ml glacial acetic acid containing (0.3 mole) sodium acetate. The mixture is heated until the solution becomes clear and then 2,5-dimethoxy tetrahydrofuran (about 0.2 mole) is added as quickly as possible. The solution is refluxed for an additional two minutes and the acetic acid is flash evaporated. The residue is distilled to give ethyl 4-(1-pyrryl)butanoate. The acid is obtained by hydrolyzing the ester in alcoholic sodium hydroxide followed by neutralization with hydrochloric acid.

Fuente