With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.128851-73-0,6-Bromobenzofuran,as a common compound, the synthetic route is as follows.
1) In a dry 500mL three-necked flask, add 3-bromoaniline (17.20g, 100mmol) and 6-bromobenzofuran (19.70g, 100mmol), toluene (200mL) and sodium tert-butoxide (28.83g, 300mmol), ultrasonically remove the air, under the protection of nitrogen, add palladium acetate (0.07 g, 0.3 mmol) and tri-t-butylphosphine (0.18 g, 0.6 mmol) the reaction was heated under reflux at 115 C for 6 hours. The reaction was monitored by liquid phase. After cooling to room temperature, 1-bromonaphthalene (20.71g, 100mmol) was added, and the temperature was raised to 115 C to continue the reaction for 8h. The reaction was monitored in liquid phase to complete the reaction, cooled to room temperature, washed twice with water, and separated. The organic phase was dried over anhydrous magnesium sulfate, filtered, The filtrate was decolorized by adding activated carbon at 115 C for 30 minutes, hot filtration, and the filtrate was concentrated. After beating with ethanol twice, 30.07g of intermediate a can be obtained with a yield of 75%., 128851-73-0
The synthetic route of 128851-73-0 has been constantly updated, and we look forward to future research findings.