反应详情

温度

60 °C

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

1. customAt the end of this time, the solvent was removed by distillation under reduced pressure
2. additiona 1: 1 by volume mixture of benzene and hexane
3. additionwas added to the residue
4. customto precipitate crystals, which
5. filtrationwere collected by filtration