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. After concentration in vacuo, the residue was rediluted in CH2Cl2 and concentrated again. To the acid chloride intermediate was added ammonia in MeOH (7 M, 13.66 ml, 96 mmol) and the mixture was stirred at room temperature for 3 h. The mixture was then concentrated. The residue was taken up in AcOEt, filtered, rinsed with AcOEt and then dried over MgSO4, filtered and concentrated in vacuo. The title compound (1.802 g, 90%) was isolated as a beige solid. LC-MS (M+1) 251.9, t=1.34 min.

1. concentrationAfter concentration in vacuo
2. additionthe residue was rediluted in CH2Cl2
3. concentrationconcentrated again
4. concentrationThe mixture was then concentrated
5. filtrationfiltered
6. washrinsed with AcOEt
7. dry with materialdried over MgSO4
8. filtrationfiltered
9. concentrationconcentrated in vacuo