反应详情

1-Bromo-2-hydroxy-4-methoxybenzene. 3-Bromo-2-hydroxy-6-methoxybenzoic acid [T. de Paulis et. al. J. Med. Chem., (1985), 28, 1263-1269] (5 g, 0.02 mol) was heated in quinoline (200 mL) at 160° C. for 1 h. On cooling, the product was partitioned between Et2O and 3 M HCl. The organic extract was washed with water and brine then dried (MgSO4), filtered and evaporated to give the title compound which was recrystallized from 5% ethyl acetate/hexane (4 g, 97%); m.p. 40-42° C. Anal, Calc. for C7H7BrO2 : C, 41.41; H, 3,48. Found C, 41.39; H, 3.37.

1. temperatureOn cooling
2. customthe product was partitioned between Et2O and 3 M HCl
3. extractionThe organic extract
4. washwas washed with water and brine
5. dry with materialthen dried (MgSO4)
6. filtrationfiltered
7. customevaporated