Reaktion #10165

Reaktionsgleichung

trifluoropropionic acid

1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride

1-hydroxy-7-azabenzotriazole

4′-((1R)-1-{[(1-aminocyclopropyl)carbonyl]amino}ethyl)-3-fluoro-1,1′-biphenyl-2-carboxylic acid

N,N-diisopropylethylamine

→

3-fluoro-4′-{(1R)-1-[({1-[(3,3,3-trifluoropropanoyl)amino]cyclopropyl}carbonyl)-amino]ethyl}-1,1′-biphenyl-2-carboxylic acid

Lösungsmittel

DCM

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGThe reaction mixture was stirred at ambient temperature under N2 for 2 hours
2. 2
   Einengenconcentrated under vacuum
3. 3
   Sonstigepartitioned between water and ethyl acetate
4. 4
   ExtraktionThe organic extract
5. 5
   Waschenwas washed with brine
6. 6
   Trocknendried over anhydrous magnesium sulfate
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated under vacuum
9. 9
   Wascheneluted with 40% MeOH in CHCl3
10. 10
    SonstigeCollection and concentration of appropriate fractions

Vorschrift

To a solution of trifluoropropionic acid (128 mg, 1.0 mmol) in DCM (1 mL), 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride (229 mg, 1.2 mmol) and 1-hydroxy-7-azabenzotriazole (136 mg, 1.0 mmol) were added. The resulting solution was stirred at room temperature for 20 minutes, then 4′-((1R)-1-{[(1-aminocyclopropyl)carbonyl]amino}ethyl)-3-fluoro-1,1′-biphenyl-2-carboxylic acid (171 mg, 0.5 mmol) in 1 mL DCM was added, followed by N,N-diisopropylethylamine until pH=10 was achieved. The reaction mixture was stirred at ambient temperature under N2 for 2 hours, concentrated under vacuum and then partitioned between water and ethyl acetate. The organic extract was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated under vacuum. The residue was subjected to column chromatography on silica gel eluted with 40% MeOH in CHCl3. Collection and concentration of appropriate fractions provided 3-fluoro-4′-{(1R)-1-[({1-[(3,3,3-trifluoropropanoyl)amino]cyclopropyl}carbonyl)-amino]ethyl}-1,1′-biphenyl-2-carboxylic acid as a white powder.

Quelle