3-Nitrobenzaldehyde → 1-Cyclopropyl-6,8-difluoro-1,4-dihydro-7-(3-(3-nitro-benzylideneamino)-pyrrolidin-1-yl)-4-oxo-5-vinyl-3-quinolinecarboxylic acid

Participants

Reaction Conditions

Reaction Steps

A solution of 0.39% of 3-amino-pyrrolidine in 4 ml of acetonitrile is treated with a solution of 0.75 g of 3-nitrobenzaldehyde in 4 ml of acetonitrile. After 1 hour at room temperature, the reaction mixture is treated with a solution of 1 g of DABCO and 0.93 g of 1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-5-vinyl-3-quinolinecarboxylic acid in 4 ml of dimethylformamide. After 1 hour under reflux, the reaction mixture is cooled to 0° C. and the product is filtered off with suction and dried. 1.33 g of 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-(3-(3-nitro-benzylideneamino)-pyrrolidin-1-yl)-4-oxo-5-vinyl-3-quinolinecarboxylic acid are obtained.

Provenance & Evidence