反应详情

4-Amino-3-metlhylphenol (304 mg, 2.47 mmols) was put into a 30-ml conical flask, purged with argon, and dissolved in 10 ml of dry dimethylformamide (DMF). Next, a DMF solution (2 ml) of 2,5-dimethoxybenzoyl chloride (708 mg, 3.53 mmols) was added, and stirred at room temperature for 12 hours. The resulting reaction mixture was poured into 75 ml of cold water, suction-filtered, extracted with methylene chloride, and washed with water. The methylene chloride layer was dried with sodium sulfate, and the methylene chloride was removed by evaporation under reduced pressure. Next, the residue was purified by column chromatography (silica gel eluted with methylene chloride) to obtain 302 mg of the intended product, 4-hydroxy-2-methylphenyl-2,5-dimethoxybenzamide (yield: 43%).

1. custom4-Amino-3-metlhylphenol (304 mg, 2.47 mmols) was put into a 30-ml conical flask
2. custompurged with argon
3. dissolutiondissolved in 10 ml of dry dimethylformamide (DMF)
4. customThe resulting reaction mixture
5. filtrationsuction-filtered
6. extractionextracted with methylene chloride
7. washwashed with water
8. dry with materialThe methylene chloride layer was dried with sodium sulfate
9. customthe methylene chloride was removed by evaporation under reduced pressure
10. customNext, the residue was purified by column chromatography (silica gel eluted with methylene chloride)