Acetic Acid → (R)-tert-butyl 2-((2-amino-4-methylphenylamino)methyl)morpholine-4-carboxylate

HRID 41103

Reaktionsgleichung

[NH2:1][CH2:2][C@H:3]1[O:8][CH2:7][CH2:6][N:5]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:4]1.CCN(C(C)C)C(C)C.F[C:26]1[CH:31]=[CH:30][C:29]([CH3:32])=[CH:28][C:27]=1[N+:33]([O-])=O.C(O)(=O)C>CO.[Zn]>[NH2:33][C:27]1[CH:28]=[C:29]([CH3:32])[CH:30]=[CH:31][C:26]=1[NH:1][CH2:2][C@H:3]1[O:8][CH2:7][CH2:6][N:5]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:4]1

Komponenten

Reaktionsbedingungen

Temperatur: 140 °C

Versuchsvorschrift

A mixture of (R)-tert-butyl 2-(aminomethyl)morpholine-4-carboxylate (0.715 g, 3.31 mmol), DIPEA (0.577 mL, 3.31 mmol), and 1-fluoro-4-methyl-2-nitrobenzene (0.513 g, 3.31 mmol) in MeOH (14 mL) was heated at 140° C. in A microwave reactor for 30 min and then cooled to room temperature. Acetic acid (1.9 mL, 33.1 mmol) was added, followed by zinc (2.162 g, 33.1 mmol). The resulting mixture was stirred at room temperature for 90 min to afford the (R)-tert-butyl 2-((2-amino-4-methylphenylamino)methyl)morpholine-4-carboxylate product (1.06 g), which was used without further purification in the next step. The product was analyzed on analytical HPLC MS using the high pH gradient method (mobile phase: 5-95% B; A: H2O with 10 mM NH4CO3 and 0.375% NH4OH v/v; B: CH3CN; 2.25 min run; X-Bridge C18; column size: 2.1×30 mm; and particle size: 5 μm). MS m/z 322.4 [M+H]+ (ESI), Rt 1.80 min.

Aufarbeitung

temperaturecooled to room temperature

Quellen und Nachweise

ORD-Eintrag: ord-48826e0ef53c44c2b9ad5f3907d5d719
Quelldatensatz: uspto-grants-2013_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08530467B2

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