Pyridine → (2S)-2-(4-chloro-benzenesulfonylamino)-5,5,5-trifluoro-3-(2,2,2-trifluoroethyl)pentanoic acid methyl ester
Reaktionsgleichung
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8](Cl)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH3:12][O:13][C:14](=[O:28])[C@@H:15]([NH2:27])[CH:16]([CH2:22][C:23]([F:26])([F:25])[F:24])[CH2:17][C:18]([F:21])([F:20])[F:19].N1C=CC=CC=1>C(Cl)Cl>[CH3:12][O:13][C:14](=[O:28])[C@@H:15]([NH:27][S:8]([C:5]1[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][CH:4]=1)(=[O:10])=[O:9])[CH:16]([CH2:17][C:18]([F:21])([F:20])[F:19])[CH2:22][C:23]([F:25])([F:26])[F:24]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 25 °C
Versuchsvorschrift
4-Chlorophenyl sulphonyl chloride (211 mg, 1.00 mmol) was added to a solution of (2S)-2-amino-5,5,5-trifluoro-3-(2,2,2-trifluoroethyl)-pentanoic acid methyl ester (267 mg, 1.00 mmol) and pyridine (0.45 mL, 3.00 mmol) in CH2Cl2 (5 mL) and the reaction was subsequently stirred for 18 h at 25° C. The solvent was removed in vacuo and the residue was dissolved in EtOAc (20 mL). This solution was washed with 1M HCl (2×10 mL) and brine (10 mL), dried over Na2SO4 and evaporated to afford a crude oil which was purified by flash chromatography eluting with 20:80 EtOAc:hexanes to provide the title compound (380 mg) as an oil in 86% yield. Mass Spectrum (−ESI): 446.0 [M−H]−.
Aufarbeitung
- customThe solvent was removed in vacuo
- dissolutionthe residue was dissolved in EtOAc (20 mL)
- washThis solution was washed with 1M HCl (2×10 mL) and brine (10 mL)
- dry with materialdried over Na2SO4
- customevaporated
- customto afford a crude oil which
- customwas purified by flash chromatography
- washeluting with 20:80 EtOAc
Quellen und Nachweise
- ORD-Eintrag
- ord-96fe88b2d96049779859bf9515005883
- Quelldatensatz
- uspto-grants-2009_06
- Patentnummer
- US07550629B2
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