Hydrochloric Acid → HCID 10943925, compound

Participants

Reaction Steps

To a solution of 193.69 g of the above ethyl 5-thia-1,8b-diazaacenaphthylene-4-carboxylate in 1 l of ethanol was added a solution of 62.9 g (1.57 mol) of sodium hydroxide in 500 ml of water, and the mixture was stirred at room temperature for 0.5 hour. To this reaction mixture was added about 130 ml of concentrated hydrochloric acid with stirring to bring the pH into the range of 4-5 and the resulting precipitate was recovered by filtration and rinsed with ethanol, acetone, and diethyl ether in that order to provide the title compound.

Provenance & Evidence