反应 #620
ord-6368febfb34940ba908b28066b8fb22a
反应条件
实验过程
diacetoxypalladium (0.314 g, 1.40 mmol) and 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (0.871 g, 1.40 mmol) were added to a degassed mixture of methyl 3-bromo-5-iodobenzoate (4.77 g, 13.99 mmol), aniline (2.55 ml, 13.99 mmol) and cesium carbonate (3.87 g, 11.89 mmol) in toluene (137 ml) under nitrogen. The resulting mixture was stirred at 110 °C for 18 hours. The resulting mixture was evaporated to dryness and the residue was diluted with EtOAc (150 mL), and washed with water (100 mL), the organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 15% EtOAc in heptane. Pure fractions were evaporated to dryness to afford methyl 3-bromo-5-(phenylamino)benzoate (1.735 g, 40.5 %) as a pale yellow solid.