N-bromobutanimide → Ethyl 2-(4-amino-3-bromo-5-(2,2,2-trifluoroethoxy)phenyl)-3-cyclopropylpropanoate
Reaktionsgleichung
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH2:14][CH:15]2[CH2:17][CH2:16]2)[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:4][C:3]=1[O:18][CH2:19][C:20]([F:23])([F:22])[F:21].C1C(=O)N([Br:31])C(=O)C1>C(Cl)(Cl)Cl.O>[NH2:1][C:2]1[C:3]([O:18][CH2:19][C:20]([F:21])([F:22])[F:23])=[CH:4][C:5]([CH:8]([CH2:14][CH:15]2[CH2:16][CH2:17]2)[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:6][C:7]=1[Br:31]Komponenten
5
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
To a stirred solution of ethyl 2-(4-amino-3-(2,2,2-trifluoroethoxy)phenyl)-3-cyclopropylpropanoate (0.9 g, 2.7 mmol) in dry CHCl3 (50 mL), NBS (0.412 g, 2.3 mmol) was added at 0° C. The reaction mixture was allowed to stir for 3 h at room temperature to complete the reaction. The reaction mixture was diluted with water, extracted with DCM (2×50 mL), the combined organic solvents was dried over Na2SO4, filtered and concentrated under reduced pressure. The crude reaction mixture was purified by column chromatography to give ethyl 2-(4-amino-3-bromo-5-(2,2,2-trifluoroethoxy)phenyl)-3-cyclopropylpropanoate (1.02 g) as a yellow solid.
Aufarbeitung
- customthe reaction
- extractionextracted with DCM (2×50 mL)
- dry with materialthe combined organic solvents was dried over Na2SO4
- filtrationfiltered
- concentrationconcentrated under reduced pressure
- customThe crude reaction mixture
- customwas purified by column chromatography
Quellen und Nachweise
- ORD-Eintrag
- ord-4b4b47b2c2df427083a7fd323582564d
- Quelldatensatz
- uspto-grants-2012_07
- Patentnummer
- US08217064B2
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