Reaktion #654478

Reaktionsgleichung

{9-[(3-trifluoromethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester

NaOH

→

{9-[(3-trifluoromethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid

Ausbeute 85.0%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe ethanol was removed in vacuo
2. 2
   FiltrationThe resultant white precipitate was collected by filtration
3. 3
   Waschenwashed with small amounts of EtOH and diethyl ether
4. 4
   Sonstigedried in vacuo

Vorschrift

A solution of the {9-[(3-trifluoromethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester (91 mg, 0.153 mM) and 0.22 mL (0.22 mM) of 1 N NaOH in 8 mL of ethanol was stirred for 17 h at 25° C. The ethanol was removed in vacuo. The resultant white precipitate was collected by filtration, washed with small amounts of EtOH and diethyl ether, then dried in vacuo to afford 75 mg (81%) of the {9-[(3-trifluoromethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, sodium salt as a white powder. 1H NMR (DMSO-d6) δ 7.65 (s, 1H), 7.6 (m, 4H), 7.45 (t, 1H, J=8 Hz), 7.35 (t, 1H, J=8 Hz), 7.3 (t, 1H, J=8 Hz), 7.2 (d, 1H, J=8 Hz), 7.1 (d, 1H, J=8 Hz), 7.05 (d, 1H, J=8 Hz), 6.5 (d, 1H, J=8 Hz), 5.75 (s, 2H), and 4.3 (s, 2H). IR (KBr, cm−1) 1665 and 1618. MS (ES) m/e 441, 443.

Quelle