Reaktion #79651

Reaktionsgleichung

9-[(2-fluorophenyl)methyl]-4-hydroxy-5-carbamoyl carbazole

methyl bromoacetate

→

{9-[(2-fluorophenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester

Ausbeute 115.4%

Lösungsmittel

DMF

ethyl acetate

Reaktionsbedingungen

Aufarbeitung

1. 1
   Waschenwashed four times with H2O
2. 2
   Trocknenonce with saturated brine, dried over magnesium sulfate
3. 3
   Filtrationfiltered
4. 4
   Einengenconcentrated
5. 5
   SonstigeThe residue was purified by column chromatography on silica gel (elution with gradient methylene chloride/ethyl acetate)

Vorschrift

40% Methanolic Triton B (0.14 mL, 0.31 mM) was added to a solution of the 9-[(2-fluorophenyl)methyl]-4-hydroxy-5-carbamoyl carbazole (51.9 mg, 0.155 mM) in 5 mL DMF at room temperature. After 3 minutes, methyl bromoacetate (110.5 mg, 0.72 mM) was added and the resultant mixture stirred at room temperature for 20 hours. The mixture was diluted with ethyl acetate, washed four times with H2O, once with saturated brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by column chromatography on silica gel (elution with gradient methylene chloride/ethyl acetate) to afford 72.8 mg (71%) of the {9-[(2-fluorophenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester as a white solid. 1H NMR (DMSO-d6) δ7.65 (d, 1H, J=8 Hz), 7.5 (s, 1H), 7.4-7.2 (m, 5H), 7.15 (s, 1H), 7.1 (d, 1H, J=8 Hz), 7.05 (t, 1H, J=8 Hz), 6.7 (t, 1H, J=8 Hz), 6.55 (d, 1H, J=8 Hz), 5.7 (s, 2H), 4.85 (s, 2H), and 3.7 (s, 3H). IR (CHCl3, cm−1) 3436, 1763, 1675, 1457, 1327, 1208, 1198, 1150, 1102, 772, 756, and 719. MS (FD) m/e 407.

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