反应详情

温度

60 °C

A mixture of 10 g (37 mmole) of the 2-(1-naphthylmethylene)glutaric acid prepared as described above and 100 ml of acetic anhydride was stirred at 60° C. for 1 hour. At the end of this time, the solvent was removed by distillation under reduced pressure, and the resulting residue was triturated with a 1: 1 by volume mixture of benzene and hexane to precipitate crystals, which were collected by filtration to give 8.1 g of 2-(1-naphthylmethylene)glutaric anhydride.

1. customprepared
2. customAt the end of this time, the solvent was removed by distillation under reduced pressure
3. customthe resulting residue was triturated with a 1: 1 by volume mixture of benzene and hexane
4. customto precipitate crystals, which
5. filtrationwere collected by filtration