反应详情

To a solution of N4-(3-ethynylphenyl)quinazoline-4,6-diamine (100 mg, 0.38 mmol) in DMF (2 mL) containing pyridine (37 μL, 0.46 mmol) was added phenyl chloroformate (49 μL, 0.38 mmol) dropwise at room temperature for 1 h. The reaction mixture was diluted with ethyl acetate and washed with water and brine. The combined organic layers were concentrated to give phenyl 4-(3-ethynylphenylamino)quinazolin-6-ylcarbamate as a yellow solid in 95% yield and used in the next step without purification.

1. washwashed with water and brine
2. concentrationThe combined organic layers were concentrated