Reacción #640559

Ecuación de reacción

Phenyl pyruvic acid

oxaloacetic acid

potassium hydroxide

hydrochloric acid

→

4-phenylmethyl-4-hydroxy-2-ketoglutaric acid

Rendimiento 37.0%

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.DISSOLUTIONhad been dissolved
2. 2
   Otroreacted at room temperature for 72 hours
3. 3
   Extracciónthe reaction mixture was extracted with ethyl acetate
4. 4
   LavadoAn organic layer was washed with saturated aqueous NaCl solution
5. 5
   Otrodried on magnesium sulfate anhydrate
6. 6
   Concentraciónconcentrated
7. 7
   Otroto yield residue
8. 8
   OtroThe residue was recrystallized from ethyl acetate and toluene

Procedimiento

Phenyl pyruvic acid (5.0 g, 30.5 mmol) and 12.1 g (91.4 mmol) of oxaloacetic acid were added to 25 mL of aqueous solution in which 13.8 g of potassium hydroxide (purity 85%) had been dissolved, and reacted at room temperature for 72 hours. A pH value of the reaction mixture was adjusted to 2.2 using concentrated hydrochloric acid, and the reaction mixture was extracted with ethyl acetate. An organic layer was washed with saturated aqueous NaCl solution, dried on magnesium sulfate anhydrate, and then concentrated to yield residue. The residue was recrystallized from ethyl acetate and toluene to yield 2.8 g (11.3 mmol) of 4-phenylmethyl-4-hydroxy-2-ketoglutaric acid as crystal.

Fuente