反应详情

A mixture of 18.8 g (0.05 mole) of 2,7-bis(4-chlorobutyryl)fluorene, prepared in Example 10, 34.0 g (0.4 mole) of piperidine, 16.6 g (0.1 mole) of potassium iodide in 200 ml of butanone is stirred and refluxed for three days. The reaction mixture is poured into 1000 ml of water, and the solid which is precipitated is filtered and recrystallized twice from chloroform-acetone to give 2,7-bis(4-piperidinobutyryl)fluorene, M.P. 157°-159° C.

1. temperaturerefluxed for three days
2. customthe solid which is precipitated
3. filtrationis filtered
4. customrecrystallized twice from chloroform-acetone