反应详情

6-bromo-2-naphthoic acid (2 g, 7.97 mmol) was stirred in thionyl chloride (13.28 ml) at 70° C. for 16 h. Solvent was evaporated, and the residue was dissolved in CH2Cl2 and concentrated again. To the acid chloride intermediate was added ammonia (7N in MeOH, 13.66 ml, 96 mmol) and the mixture was stirred at room temperature for 3 h. The reaction mixture was concentrated, diluted in ethyl acetate and filtered. The solid was rinsed with ethyl acetate and then dried. The title compound 2a (1.802 g, 90%) was isolated as beige solid. LC-MS (M+1) 251.9, t=1.34 min.

1. customSolvent was evaporated
2. dissolutionthe residue was dissolved in CH2Cl2
3. concentrationconcentrated again
4. concentrationThe reaction mixture was concentrated
5. additiondiluted in ethyl acetate
6. filtrationfiltered
7. washThe solid was rinsed with ethyl acetate
8. customdried