反应详情

A mixture of 4-hydroxyphthalic acid (4.0 g, 22 mmol), 9,9-bis(4-aminophenyl)fluorene (3.5 g, 10 mmol), and 40 ml of acetic acid was stirred and heated under reflux for 48 hours. After cooling to room temperature, the precipitate was collected by filtration and washed with acetic acid (2×25 ml) to provide the title compound as a colorless powder having a melting point greater than 300° C. (3.4 g, 53.1% yield). The nuclear magnetic resonance and infrared spectrum were consistent with the structure.

1. temperatureheated
2. temperatureunder reflux for 48 hours
3. filtrationthe precipitate was collected by filtration
4. washwashed with acetic acid (2×25 ml)