Potassium Carbonate → HCID 86730383, compound

Participants

Reaction Steps

To a solution of 4-chloro-6-methoxyquinazolin-7-ol (compound 5, 3.0 g, 14.25 mmol) and ethyl 4-bromobutanoate (4.53 g, 28.49 mmol) in tetrahydrofuran (30 mL) was added potassium carbonate (5.90 g, 42.74 mmol) and the mixture was stirred overnight at room temperature. The reaction mixture was diluted with water (60 mL) and extracted with ethyl acetate (100 mL×2). The combined organic phases were concentrated to give the crude product as a yellow solid. The crude product was purified by silica gel column (gradient of hexane:ethyl acetate 10:1 to 2:1) to give Compound 6 (3.7 g) as a yellow solid.

Provenance & Evidence