Cesium carbonate → 4-(2-(4-(Benzo[d]thiazol-2-ylamino)phenoxy)pyridin-3-yl)-1-methylpyrrolidin-2-one

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Reaction Conditions

Reaction Steps

To a mixture of cesium carbonate (0.625 g, 1.92 mmol), 4-(benzo[d]thiazol-2-ylamino)phenol (0.445 g, 1.84 mmol), and 4-(2-fluoropyridin-3-yl)-1-methylpyrrolidin-2-one (0.111 g, 0.572 mmol) was added NMP (2 mL). The reaction mixture was degassed and heated to 100° C. for 30 min, heated to 120° C. for 3.5 h, and diluted with EtOAc and water. The aqueous phase was extracted with EtOAc (3×), and the combined organic extracts were washed with 1 M NaOH (1×), brine (1×), dried over MgSO4, filtered, and concentrated. Purification by flash column chromatography on silica gel (20% to 80% EtOAc (10% MeOH) in hexanes) gave 4-(2-(4-(benzo[d]thiazol-2-ylamino)phenoxy)pyridin-3-yl)-1-methylpyrrolidin-2-one (0.174 g, 0.418 mmol, 73% yield) as a white solid and a 1:1 mixture of enantiomers. MS (ESI, pos. ion) m/z: 417.1 (M+1). IC50 (uM) +++++.

Provenance & Evidence