Hydrochloric Acid → HCID 9952934, compound

Participants

Reaction Steps

In 8 ml of ethanol was suspended 650 mg of N-(3,5-dichlorophenyl)-6,7-dihydro-3-ethoxycarbonylmethoxy-5H-thiazolo[3,2-a]pyrimidine-2-carboxamide obtained in Example 113. To the suspension was added 2 ml of 1N sodium hydroxide aqueous solution at room temperature, followed by stirring at the same temperature for 30 minutes. The mixure was made acidic with a concentrated hydrochloric acid. The precipitated crystals were collected by filtration, washed with water and diethylether, and dried to obtain 484 mg of the titled compound.

Provenance & Evidence