Reaktion #72806

Reaktionsgleichung

1-(bromomethyl)-2,3-dichlorobenzene

methyl 5-(4-morpholinyl)-2-(trifluoromethyl)-1H-benzimidazole-7-carboxylate

potassium carbonate

→

desired product

Ausbeute 6.1%

methyl 1-[(2,3-dichlorophenyl)methyl]-6-(4-morpholinyl)-2-(trifluoromethyl)-1H-benzimidazole-4-carboxylate

Ausbeute 6.1%

Lösungsmittel

N,N-Dimethylformamide

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeprepared
2. 2
   Temperaturthe mixture was warmed to 80° C.
3. 3
   workup.STIRRINGstirred for 3 h at this temperature
4. 4
   TemperaturThe resulting mixture was cooled to rt
5. 5
   workup.ADDITIONpoured over ice
6. 6
   SonstigeThe precipitate formed
7. 7
   Filtrationwas collected by filtration and air
8. 8
   Sonstigedried
9. 9
   Sonstigeto give crude product (2.2 g, 4.51 mmol, 99% yield) (91% pure)
10. 10
    SonstigeA portion of this material (230 mg) was purified by reverse phase-HPLC (25 to 95% AcCN in water, plus 0.1% TFA)

Vorschrift

A mixture of methyl 5-(4-morpholinyl)-2-(trifluoromethyl)-1H-benzimidazole-7-carboxylate, prepared as described in Example 45 (1.5 g, 4.56 mmol) and potassium carbonate (1.889 g, 13.67 mmol) in N,N-Dimethylformamide (DMF) (10 mL) was stirred at rt for 10 min. After addition of 1-(bromomethyl)-2,3-dichlorobenzene (1.639 g, 6.83 mmol), the mixture was warmed to 80° C. and stirred for 3 h at this temperature. The resulting mixture was cooled to rt and poured over ice. The precipitate formed was collected by filtration and air dried to give crude product (2.2 g, 4.51 mmol, 99% yield) (91% pure). A portion of this material (230 mg) was purified by reverse phase-HPLC (25 to 95% AcCN in water, plus 0.1% TFA) to give the desired product (137.4 mg, 0.276 mmol, 6.05% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 7.65 (d, J=2.27 Hz, 1H), 7.61 (dd, J=8.08, 1.26 Hz, 1H), 7.48 (d, J=2.27 Hz, 1H), 7.24 (t, J=7.96 Hz, 1H), 6.25 (dd, J=7.83, 1.26 Hz, 1H), 5.77 (s, 2H), 3.93 (s, 3H), 3.68-3.81 (m, 4H), 3.13-3.24 (m, 4H). MS (ES+) m/e 488 [M+H]+.

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