Water → HCID 18973187, compound

Participants

Reaction Steps

8.6 g (0.022 mol) of ethyl 7,8-dichloro-1-(2,4-difluorophenyl)-1,4-dihydro-4-oxo-1,6-naphthyridine-3-carboxylate are heated at reflux in a mixture of 29 ml of acetic acid, 29 ml of water and 2.9 ml of concentrated sulphuric acid for two hours. The cooled mixture is put into ice-water, and the product is isolated and washed with water.

Provenance & Evidence