Hydrochloric Acid → 4-Amino-6-(4-aminophenyl)-2-(6-methylpyridin-2-ylmethylsulfanyl)-pyrimidine-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

The compound (5.5 g) of Example 2 was suspended in a mixture of 50 mL of ethanol and 50 mL of water, and to the suspension was added 50 mL of 5N hydrochloric acid, and the resulting mixture was heated at 80° C. for 5 hours under stirring. After cooling the reaction mixture, the ethanol was removed under reduced pressure, and the residue was neutralized with 5N aqueous sodium hydroxide at ice temperature. The resulting crystal was filtrated, and recrystallized with ethanol to give 2.3 g of 4-amino-6-(4-aminophenyl)-2-(6-methylpyridin-2-ylmethylsulfanyl)-pyrimidine-5-carbonitrile as a light yellow powder.

Provenance & Evidence