反应详情

A mixture of dimethyl m-phthalate (40.0 g, 0.206 mol) and 1,1-dimethylhydrazine (78.3 mL, 1.03 mol) was stirred at room temperature for 17 h and refluxed under heating for 21 h. The reaction mixture was concentrated, and the residue was washed with dichloromethane to give a powder, to which were added water (300 mL) and 1N hydrochloric acid (300 mL). The precipitated solids were collected by filtration, dried under reduced pressure, and recrystallized from chloroformmethanol (9:1) to give 9.05 g (24%) of 3-methoxycarbonylbenzoic acid as colorless crystals.

1. temperaturerefluxed
2. temperatureunder heating for 21 h
3. concentrationThe reaction mixture was concentrated
4. washthe residue was washed with dichloromethane
5. customto give a powder
6. filtrationThe precipitated solids were collected by filtration
7. customdried under reduced pressure
8. customrecrystallized from chloroformmethanol (9:1)