Cesium carbonate → HCID 67383100, compound

Participants

Reaction Conditions

Reaction Steps

Resealable tube was charged with solids: (S)-2′-bromo-4′-fluoro-7′-methoxy-5H-spiro[oxazole-4,9′-xanthen]-2-amine (500 mg, 1.32 mmol, prepared as described in Method BB40 but using 4-bromo-2-fluorophenol and 2-bromo-5-methoxybenzoic acid)), Pd2 dba3 (121 mg, 0.13 mmol), (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (229 mg, 0.40 mmol), cesium carbonate (859 mg, 2.64 mmol). pyrrolidin-2-one (152 μL, 1.98 mmol) and dioxane (5 ml) were added and the mixture was stirred at 100° C. for 60 h. The mixture was diluted with EtOAc, filtered through celite, concentrated and purified on 12 g RediSep Gold column using 10-80% of DCM/MeOH/NH4OH 90:10:1 in DCM to afford (S)-1-(2-amino-5′-fluoro-2′-methoxy-5H-spiro[oxazole-4,9′-xanthene]-7′-yl)pyrrolidin-2-one.

Provenance & Evidence