Hydrochloric Acid → (S)-Methyl 3-amino-3-(4-chlorophenyl)propanoate

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Reaktionsgleichung

Cl.C(OC([NH:9][C@H:10]([C:16]1[CH:21]=[CH:20][C:19]([Cl:22])=[CH:18][CH:17]=1)[CH2:11][C:12]([O:14][CH3:15])=[O:13])=O)(C)(C)C>C(Cl)Cl>[NH2:9][C@H:10]([C:16]1[CH:17]=[CH:18][C:19]([Cl:22])=[CH:20][CH:21]=1)[CH2:11][C:12]([O:14][CH3:15])=[O:13]

Komponenten

Reaktionsbedingungen

Temperatur: 20 °C

Versuchsvorschrift

Hydrochloric acid (4.0M in 1,4 Dioxane) (4.18 mL, 16.73 mmol) was added in one portion to (S)-methyl 3-(tert-butoxycarbonylamino)-3-(4-chlorophenyl)propanoate (Intermediate 19) (1.05 g, 3.35 mmol) in DCM (20 mL) at 20° C. The resulting solution was stirred at 20° C. for 5 hours. The reaction mixture was evaporated to give (S)-methyl 3-amino-3-(4-chlorophenyl)propanoate (hydrochloride) (0.850 g, 102%) as a white solid. 1H NMR (399.9 MHz, DMSO-d6) δ 2.98-3.04 (1H, m), 3.16-3.21 (1H, m), 3.58 (3H, s), 4.62-4.66 (1H, m), 7.50-7.52 (2H, m), 7.57-7.59 (2H, m), 8.66 (3H, s). m/z (ESI+) (M+H)+=214; HPLC tR=1.71 min.

Aufarbeitung

customThe reaction mixture was evaporated

Quellen und Nachweise

ORD-Eintrag: ord-23c3376aa8f148c09678f1902f74b584
Quelldatensatz: uspto-grants-2012_01
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08101623B2

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