Cesium carbonate → 4-[4-(azetidine-1-carbonyl)-3-fluorophenoxy]-2,2-dimethyl-N-(1-methylpyrazol-3-yl)-3H-1-benzofuran-6-carboxamide

Participants

Reaction Conditions

Reaction Steps

4-Hydroxy-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid(1-methyl-1H-pyrazol-3-yl)-amide (31a) (421 mg, 1.47 mmol) and Cs2CO3 (965 mg, 2.96 mmol) was added to a solution of azetidin-1-yl(2,4-difluorophenyl)methanone (33a) (292 mg, 1.48 mmol). The reaction mixture was heated to 160° C. for 2 hr in a microwave. The mixture was filtered and concentrated, The residue was purified by SFC chromatography to give 4-[4-(azetidine-1-carbonyl)-3-fluoro-phenoxy]-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid(1-methyl-1H-pyrazol-3-yl)-amide (315 mg, 46% yield) and 4-[2-(azetidine-1-carbonyl)-5-fluoro-phenoxy]-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid(1-methyl-1H-pyrazol-3-yl)-amide (34 mg, 5% yield) as white solid.

Provenance & Evidence