Hydrochloric Acid → HCID 23508042, compound

Participants

Reaction Steps

To the solution of methanol (80 ml) was added the 4-(1H-5-indazolylamino)-2-methylthio-5-pyrimidinecarboxylic acid ethyl ester (5 g) obtained by the preparation example 1, and the solution was hydrolyzed at 40-50° C. for 1 hr, adding H2O (30 ml) and3N aq. NaOH (15 ml). The reaction mixture was cooled, measured pH 5 at 20° C., slowly adding 3 N aq. HCl. And then the reaction mixture was slowly added H2O (100 ml),stirred at 20° C. for 1 hr, filtered, washed with H2O (30 ml), and obtained a solid product. The solid product was dried at 50° C. in vacuo to obtain the desired compound (4.44 g, 97%).

Provenance & Evidence