反应详情

A solution of EXAMPLE 50A (60.0 mg, 0.316 mmol) in a mixture of pyridine (1.5 mL) and N,N-dimethylformamide (1.5 mL) was treated with 1,1′-carbonyldiimidazole (56.3 mg, 0.347 mmol) at 45° C. for 2 hours. After cooling, 2,3-diaminobenzamide (HCl salt) (70.7 mg, 0.316 mmol) was added and the mixture stirred at room temperature for 5 hours. After concentration, the residue was treated with 20% brine and ethyl acetate. The solid was filtered, washed with ethyl acetate and water, and dried under vacuum to provide the title compound. This material was used in the next step without further purification.

1. temperatureAfter cooling
2. concentrationAfter concentration
3. additionthe residue was treated with 20% brine and ethyl acetate
4. filtrationThe solid was filtered
5. washwashed with ethyl acetate and water
6. customdried under vacuum