反应详情

温度

110 °C

A mixture of 6,7-dichloro-1-ethyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid (4.3 g), pyrrolidine (10 cm3) and DMSO (45 cm3) was heated for 2 hours at 110° C. Part of the reaction product precipitated during the reaction. After cooling, it was filtered off and recrystallised from DMF (50 cm3). 3 g of 6-chloro-1-ethyl-4-oxo-7-pyrrolidino-1,4-dihydro-quinoline-3-carboxylic acid, m.p. 325° C., were obtained.

1. customPart of the reaction product precipitated during the reaction
2. temperatureAfter cooling
3. filtrationit was filtered off
4. customrecrystallised from DMF (50 cm3)