INTERMEDIATES USEFUL FOR THE SYNTHESIS OF AMINOPYRIMIDINE DERIVATIVES, PROCESS FOR PREPARING THE SAME, AND PROCESS FOR PREPARING AMINOPYRIMIDINE DERIVATIVES USING THE SAME

The present invention provides a novel process for preparing an aminopyrimidine derivative or pharmaceutically acceptable salt thereof having a selective inhibitory activity against protein kinases, especially against the protein kinases for mutant epidermal growth factor receptors. And also, the present invention provides novel intermediates useful for said process and processes for preparing the same.