Method of imatinib manufacturing

摘要

A process for the preparation of Imatinib according to the invention consists in converting the 2-methyl-5-halogenoaniline of the Formula 2 into the salt of the 2-methyl-5- halogenophenylguanidine of the Formula 3, which is then condensed with the 3-diaIkylamino- ]-(pyridin-3-yI)prop-2-en-l-one of the Formula 4 to yield the N-(2-methyl-5- halogenophenyl)-4-(pyridin-3-yl)-pyrimidin-2-ylamine of the Formula 5, which is then reacted with 4-(4-methylpiperazin-l-ylmethyl)benzamide of the Formula 6, and the obtained Imatinib is optionally converted into its addition salt.