反应详情

A solution of 9.59 g (60.0 mmoles) of bromine in 20 ml of acetic acid ethyl ester is added dropwise to a solution of 10.0 g (60.0 mmoles) of 6-chloro-1-indanone in 80 ml of acetic acid ethyl ester and 0.5 ml of 48% strength aqueous hydrobromic acid. After stirring for 3 hours, the reaction solution is concentrated to dryness, the residue is stirred with 50 ml of water and the precipitate is filtered off. The crude product of melting point 84°-87° is recrystallized from petroleum ether 60/70 and gives the pure product of melting point 92°-94° C.

1. concentrationthe reaction solution is concentrated to dryness
2. stirringthe residue is stirred with 50 ml of water
3. filtrationthe precipitate is filtered off
4. customThe crude product of melting point 84°-87° is recrystallized from petroleum ether 60/70
5. customgives the pure product of melting point 92°-94° C.