Potassium Carbonate → 3-[4-(3,4-Difluoro-benzyloxy)-phenyl]-isoxazole-5-carboxylic acid amide

Participants

Reaction Steps

3-(4-Hydroxy-phenyl)-isoxazole-5-carboxylic acid amide (which may be prepared as described in Preparation of Intermediate 2; 50 mg, 0.24 mmol), K2CO3 (37 mg, 0.27 mmol) and tetrabutylammonium iodide (9 mg, 0.024 mmol) were taken up in DMF (2.4 mL). 3,4-Difluorobenzyl bromide (56 mg, 0.27 mmol) was added and the reaction mixture was stirred at room temperature overnight. The solvent was evaporated and the residue was purified by high-throughput purification to give 3-[4-(3,4-difluoro-benzyloxy)-phenyl]-isoxazole-5-carboxylic acid amide (14 mg, 18%). HRMS Calcd. for C17H13F2N2O (M+H)+, 331.0889. Found: 331.0886.

Provenance & Evidence