In this study, a series of substituted tetrahydrothieno[2,3-c]pyridin-2-yl (THTP) derivatives C1-C3 and N1-N3 were synthesized in one step using 2-amino-5,5,7,7-tetramethyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carbonitrile with a different two adjacent chloro and nitro substituted group...