Potassium Carbonate → Tert-butyl[2-(2-methoxy-benzylsulfanyl)-benzoimidazol-1-yl]-acetate
Reaktionsgleichung
C([O-])([O-])=O.[K+].[K+].[SH:7][C:8]1[N:12]([CH2:13][C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[C:11]2[CH:21]=[CH:22][CH:23]=[CH:24][C:10]=2[N:9]=1.[CH3:25][O:26][C:27]1[CH:34]=[CH:33][CH:32]=[CH:31][C:28]=1[CH2:29]Cl>CC(C)=O>[C:17]([O:16][C:14](=[O:15])[CH2:13][N:12]1[C:11]2[CH:21]=[CH:22][CH:23]=[CH:24][C:10]=2[N:9]=[C:8]1[S:7][CH2:29][C:28]1[CH:31]=[CH:32][CH:33]=[CH:34][C:27]=1[O:26][CH3:25])([CH3:19])([CH3:20])[CH3:18]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A suspension of K2CO3 (31.4 mg, 0.23 mmol) in acetone (3 ml) containing tert-butyl (2-mercapto-benzoimidazol-1-yl)-acetate (Intermediate 3-I, 30 mg, 0.11 mmol) and 2-methoxybenzyl chloride (17.8 mg, 15.8 μl, 0.11 mmol) is stirred at rt overnight. Filtration over Celite and evaporation of the solvent in vacuo affords the pure title compound (27 mg) in 62% yield as a yellow oil: tR=7.47 min (LC-1), MS (pos.): m/z 385.20 [M+H]+; 1H NMR (DMSO-d6): δ (ppm) 1.37 (s, 9H, tBu), 3.90 (s, 3H, OCH3), 4.53 (s, 2H, SCH2), 4.92 (s, 2H, CH2CO2), 6.87 (t, 1Harom), 7.03 (d, 1Harom), 7.21 (m, 2Harom), 7.28 (t, 1Harom), 7.40 (d, 1Harom), 7.50 (m, 1Harom), 7.64 (m, 1Harom).
Aufarbeitung
- filtrationFiltration
- customover Celite and evaporation of the solvent in vacuo
Quellen und Nachweise
- ORD-Eintrag
- ord-086a1f7b873e419c8bfdb9b685b6f8f0
- Quelldatensatz
- uspto-grants-2012_09
- Patentnummer
- US08273740B2
Notizen zur Reaktion
Wird geladen…