Réaction #8529

Équation de réaction

hydrogen

2,3, 4-Trifluoroaniline

ethyl pyruvate

magnesium sulfate

→

title compound

Rendement 95.0%

Ethyl 2-(2,3,4-trifluoroanilino)propionate

Rendement 95.0%

Solvants

methanol

Conditions de réaction

Traitement

1. 1
   FiltrationAfter filtering off Pd—C and magnesium sulfate
2. 2
   Concentrationthe obtained filtrate was concentrated under reduced pressure

Mode opératoire

2,3, 4-Trifluoroaniline (2.94 g) and ethyl pyruvate (2.32 g) were dissolved in methanol (30 ml). After adding 5% Pd—C (2.0 g) and anhydrous magnesium sulfate (2.65 g), the mixture was stirred at 50° C. in a hydrogen atmosphere for 16 hours. After filtering off Pd—C and magnesium sulfate, the obtained filtrate was concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (ethyl acetate-normal hexane=1:4) to thereby give the title compound (4.69 g) as a pale yellow oily substance. Various spectral data of this product was identical with those obtained in Example 7.

Source