Hydrochloric Acid → Methyl2-(2,3,4-trifluoroanilino)propionate

HRID 8436

Reaction equation

HRID 8436 reaction equation
[F:1][C:2]1[C:8]([F:9])=[C:7]([F:10])[CH:6]=[CH:5][C:3]=1[NH2:4].[C:11]([O:16][CH3:17])(=[O:15])[C:12]([CH3:14])=O.Cl>CO.[Pd]>[F:1][C:2]1[C:8]([F:9])=[C:7]([F:10])[CH:6]=[CH:5][C:3]=1[NH:4][CH:12]([CH3:14])[C:11]([O:16][CH3:17])=[O:15]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 11748Methyl pyruvateHCID 774682,3,4-Trifluoroaniline

Product 1

HCID 22015876Methyl2-(2,3,4-trifluoroanilino)propionateYield 95.8%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Conditions

Temperature
40 °C

Procedure

2,3,4-Trifluoroaniline (0.83 g) and methyl pyruvate (0.87 g) were dissolved in methanol (8 ml). After adding 5% Pd—C (0.11 g) and conc. hydrochloric acid (0.03 g), the mixture was stirred at 40° C. under a hydrogen gas pressure of 2.94 MPa for 2 hours. After filtering off Pd—C, the obtained filtrate was concentrated under reduced pressure. Thus the title compound (1.26 g) was obtained as slightly yellowish crystals. Various spectral data of this product was identical with those obtained in Example 5.

Workup

  1. filtrationAfter filtering off Pd—C
  2. concentrationthe obtained filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-c0f2a87299a64a6e9bc3a81dbecb66f0
Source dataset
uspto-grants-2006_08
Patent number
US07087778B2

Linked notes

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