Patent ID: 8609842

Claim:
A method for synthesizing Imatinib, characterized in that, the method comprises the following steps: 4-(4-methyl-piperazin-1-ylmethyl)-N-[4-methyl-3-[4-(3-pyridinyl)-pyrimidin-2-ylamino]-benzamide shown in formula (III), is formed by reacting 4-methyl-N-3-(4-pyridin-3-yl-pyrimidin-2-yl)-1,3-benzenediamine shown in formula (I) with 4-(4-methyl-piperazin-1-methyl)-benzoic ester shown in formula (II), under the action of a base and in an organic solvent, in the above generic chemical structural formula, R represents an aliphatic alkyl having 1-10 carbon, phenyl, substituted phenyl, benzyl or substituted benzyl.