Water → HCID 18973177, compound

Participants

Reaction Steps

0.95 g (3.1 mmol) of ethyl 9-chloro-3-methyl-6-oxo-3,6-dihydro-2H-1-oxa-3a,8-diazaphenalene-5-carboxylate are heated at reflux in a mixture of 4 ml of acetic acid, 4 ml of water and 0.4 ml of concentrated sulphuric acid for four hours. The cooled mixture is put into ice-water, the product is isolated and washed with water.

Provenance & Evidence