4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine is a useful reactant for the synthesis of thieno[2,​3-​d]​pyrimidines and furo[2,​3-​d]​pyrimidines derivatives, for the use as c-​Met inhibitiors as a potential antitumor agents.