Dimethylformamide → HCID 178501055, Verbindung

HRID 422670Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 422670
[Cl:1][C:2]1[C:3]([CH2:8][NH:9][C:10]([C@H:12]2[CH2:17][CH2:16][C@H:15]([C:18]([O:20][CH3:21])=[O:19])[CH2:14][CH2:13]2)=O)=[N:4][CH:5]=[CH:6][N:7]=1.CN(C=O)C>C(#N)C>[Cl:1][C:2]1[C:3]2[N:4]([C:10]([C@H:12]3[CH2:17][CH2:16][C@H:15]([C:18]([O:20][CH3:21])=[O:19])[CH2:14][CH2:13]3)=[N:9][CH:8]=2)[CH:5]=[CH:6][N:7]=1

Komponenten

4

Edukt 2

HCID 6228DimethylformamideHCID 178501155HCID 178501155, Verbindung

Produkt 1

HCID 178501055HCID 178501055, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

trans-Methyl 4-({[(3-chloropyrazin-2-yl)methyl]amino}carbonyl)-cyclohexanecarboxylate (29.00 g, 93.02 mmol) was dissolved in anhydrous acetonitrile (930 mL) and anhydrous DMF (9 mL) and heated at 55° C. under nitrogen for 3 h. The reaction mixture was concentrated in vacuo, then, the solid residue was taken up in DCM, then, basified to pH 10 with 2M ammonia in isopropanol. The mixture was concentrated in vacuo, re-dissolved in DCM, then, loaded onto TEA-basified silica gel. The crude product was purified by a silica gel column chromatography (eluted with 2:3 EtOAc/DCM) to obtain the title compound as a yellow powder; 1H NMR (CDCl3, 400 MHz) δ 1.63 (ddd, J=13.2, 13.2, 13.2, 3.2 Hz, 2H), 1.85 (ddd, J=13.2, 13.2, 13.2, 2.8 Hz, 2H), 2.10 (dd, J=14.4, 3.2 Hz, 2H), 2.19 (dd, J=14.0, 3.2 Hz, 2H), 2.46 (tt, J=12.4, 3.6 Hz, 1H), 2.96 (tt, J=11.6, 3.2 Hz, 1H), 3.70 (s, 3H), 7.33 (dd, J=5.2, 1.2 Hz, 1H), 7.61 (d, J=4.8 Hz, 1H), 7.79 (s, 1H). MS (ES+): m/z 294.17/296.14 (100/86) [MH+]. HPLC: tR=2.85 min (OpenLynx, polar—5 min).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. concentrationThe mixture was concentrated in vacuo
  3. dissolutionre-dissolved in DCM
  4. customThe crude product was purified by a silica gel column chromatography (eluted with 2:3 EtOAc/DCM)

Quellen und Nachweise

ORD-Eintrag
ord-3582e71e16e441bc855e65393105405a
Quelldatensatz
uspto-grants-2012_01
Patentnummer
US08101613B2

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