Trifluoroacetic acid → 4-(2-Methoxyphenyl)piperidine
Reaktionsgleichung
C(OC([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[O:20][CH3:21])[CH2:10][CH2:9]1)=O)(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH3:21][O:20][C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][C:14]=1[CH:11]1[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture of 4-(2-methoxy-phenyl)-piperidine-1-carboxylic acid tert-butyl ester (190 mg, 0.65 mmol), and TFA (0.35 mL, 4.8 mmol) in dry CH2Cl2 (5 mL) is stirred at room temperature under nitrogen for 2 h. The mixture is concentrated under reduced pressure, and the residue is combined with CH2Cl2/sat. aqueous NaHCO3. The aqueous layer is extracted twice with CH2Cl2, the combined organic extracts are washed with brine, dried (MgSO4), filtered and concentrated to provide the title compound.