Dimethylformamide → HCID 67111889, compound

Participants

Reaction Conditions

Reaction Steps

In a sealable bottle, sodium tert-butoxide (0.120 g, 1.25 mmol) was added to a mixture of acetamidomalonic acid diethyl ester (0.272 g, 1.25 mmol) in THF (10.00 mL)/DMF (2.00 mL). The reaction mixture was heated to 80° C. for 20 min., cooled to ambient temperature, and a solution of 2-(4-(bromomethyl)-2-fluorophenyl)-5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridine (0.500 g, 1.14 mmol) in THF 4 mL was added slowly dropwise. The resulting mixture was heated to reflux (90° C.) for 1.5 h, and the color changed from orange to yellow. The reaction mixture was cooled, poured over ice water, and treated with EtOAc. The organic layer was washed with water, NaCl, dried over MgSO4, filtered, and concentrated in vacuo. Purification by silica gel chromatography, 40 g column, 10-30% EtOAc/hexanes, followed by 30-50% (3% Et3N in EtOAc)/hexanes provided diethyl 2-acetamido-2-(3-fluoro-4-(5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridin-2-yl)benzyl)malonate. MS (ESI) m/z: calculated: 575.2; Observed: 576.1 (M++1).

Provenance & Evidence