Hydrochloric Acid → 5-Acetyl-N-((4,6-dimethoxypyrimidin-2-yl)aminocarbonyl)-2-ethoxybenzenesulfonamide

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Reaction Steps

To a stirred suspension of 0.2 g of the compound from Example 8, 0.23 g of 4,6-dimethoxy-2-pyrimidinylcarbamic acid, phenyl ester in 10 ml of dry acetonitrile was added 127 μl of DBU. After being stirred for 1 hr. the mixture was treated with 40 ml of water and 1N HCl in a dropwise manner until the pH was 3. The precipitate was filtered off and washed with water and ether/hexane (1/1), to give 0.27 g of a solid, m.p. 192°-193° C.;

Provenance & Evidence