Reacción #58960

Ecuación de reacción

Hydrochloric acid

ethyl (2E)-3-(1-methyl-1H-pyrazol-4-yl)acrylate

methanol

sodium hydroxide

→

(2E)-3-(1-methyl-1H-pyrazol-4-yl)acrylic acid

Rendimiento 83.0%

Disolventes

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   Extracciónthe mixture was extracted with ethyl acetate
2. 2
   LavadoThe organic layer was washed with water
3. 3
   Secadodried over anhydrous magnesium sulfate
4. 4
   Concentraciónconcentrated

Procedimiento

To a mixture of ethyl (2E)-3-(1-methyl-1H-pyrazol-4-yl)acrylate (2.5 g), methanol (20 ml) and tetrahydrofuran (20 ml) was added a 2N aqueous sodium hydroxide solution (13.9 ml) and the mixture was stirred at 60° C. for 3 hrs. 1N Hydrochloric acid was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water, dried over anhydrous magnesium sulfate, and concentrated to give (2E)-3-(1-methyl-1H-pyrazol-4-yl)acrylic acid (1.75 g, 83%) as an amorphous form.

Fuente