Reaktion #502771

Reaktionsgleichung

Water

5-bromo-2-bromomethyl-benzothiazole

2,6-difluoro-3-hydroxybenzamide

potassium carbonate

→

title compound

3-(5-Bromo-benzothiazol-2-ylmethoxy)-2,6-difluoro-benzamide

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigewas precipitated out
2. 2
   Filtrationfiltered
3. 3
   Waschenwashed with diethylether

Vorschrift

To a solution of 5-bromo-2-bromomethyl-benzothiazole (1.1 g, 0.358 mmol) in 5 ml of anhydrous DMF was added 2,6-difluoro-3-hydroxybenzamide (0.620 g, 0.22 mol) and potassium carbonate (1.73 g, 1.25 mmol). The reaction mixture was stirred at 25° C. for 24 h under nitrogen atmosphere. Water was added to the reaction mixture the compound was precipitated out, filtered and washed with diethylether to give the title compound as yellow solid (1.1 g, 76%). 1H NMR (DMSO-d6, 400 MHz): δ 5.71 (s, 2H), 7.11 (dt, 1H J=8.8 Hz (o-coupling), 7.38-7.39 (m, 1H), 7.65 (d, 1H, J=8.8 Hz (o-coupling), 7.90 (broad s, 1H), 8.13 (d, 1H, J=8.8 Hz (o-coupling), 8.18 (s, 1H), 8.26 (broad s, 1H). MS ES+ (400.9), HPLC (method 5) Rt=16.57 min.

Quelle