HCID 67412568, compound → HCID 67412650, compound

Participants

Reaction Conditions

Reaction Steps

2.99 g of 4-[(3,5-difluorobenzyl)amino]-6-[(4-morpholinophenyl)amino]pyridine-3-carboxylic acid ethyl ester was dissolved in 30 mL of methanol, to which 12 mL of 4 mol/L sodium hydroxide in water was added at room temperature, and stirred at 80° C. for 1.5 hour. After cooling, methanol was evaporated, weakly acidified (about pH 4) by adding 6 mol/L hydrochloric acid in water under ice cooling, the deposited crystals were filtered, and washed with water and methanol. After air-drying, they were dried under reduced pressure (60-70° C., for 3 hours) to obtain 2.72 g (yield 97%) of 4-[(3,5-difluorobenzyl)amino]-6-[(4-morpholinophenyl)amino]pyridine-3-carboxylic acid as a light reddish purple crystalline powder.

Provenance & Evidence