反应详情

2.1 1 ml of conc. sulfuric acid is added to a solution of 100 g of 2,4-dimethoxybenzoic acid in 500 ml of methanol, and the mixture is refluxed for 14 hours. The mixture is cooled, the solvent is removed, the residue is dissolved in 1 litre of MTB, the solution is washed three times with 200 ml of water each time and dried, and the solvent is removed, giving 105.5 g of methyl 2,4-dimethoxybenzoate.

1. temperaturethe mixture is refluxed for 14 hours
2. temperatureThe mixture is cooled
3. customthe solvent is removed
4. dissolutionthe residue is dissolved in 1 litre of MTB
5. washthe solution is washed three times with 200 ml of water each time
6. customdried
7. customthe solvent is removed