反应详情

48 1 g of 2-benzyl-4-methoxycarbonylisoindoline prepared in Reference Example 14-(3) was added to a solution of 16 g of sodium hydroxide in 160 ml of water and the mixture was heated under reflux for 3 hours. After removing insoluble materials by filtration, the filtrate was adjusted to pH 5 with 6 N hydrochloric acid. The resulting crystals were collected by filtration, and was washed with water, cold ethanol, ether, and then chloroform to give 35.0 g of 2-benzylisoindoline-4-carboxylic acid.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 3 hours
3. customAfter removing insoluble materials
4. filtrationby filtration
5. filtrationThe resulting crystals were collected by filtration
6. washwas washed with water, cold ethanol, ether