Reaktion #654501

Reaktionsgleichung

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

NaOH

→

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

Ausbeute 69.0%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   FiltrationThe resultant white precipitate was collected by filtration
2. 2
   Waschenwashed with a small amount of EtOH
3. 3
   Sonstigedried in vacuo

Vorschrift

A suspension of the {9-[(3,5-dimethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester (18 mg, 0.043 mM) and 0.043 mL (0.043 mM) of 1 N NaOH in 5 mL of ethanol was stirred for 42 hours at 25° C. The resultant white precipitate was collected by filtration, washed with a small amount of EtOH, then dried in vacuo to afford 12 mg (67%) of the {9-[(3,5-dimethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, sodium salt as a white powder. 1H NMR (DMSO-d6) δ 7.6 (d, 1H, J=8 Hz), 7.5-7.3 (m, 4H), 7.1 (m, 2H), 6.9 (s, 1H), 6.8 (s, 2H), 6.6 (d, 1H, J=8 Hz), 5.65 (s, 2H), 4.35 (s, 2H), and 2.2 (s, 6H). IR (KBr, cm−1) 3385, 1663, 1616, 1575, 1498, 1456, 1412, and 1330. MS (ES) m/e 401, 403.

Quelle