A series of new thirteen N-(3-Methoxyphenyl)thiomorpholine-2-carboxamide 1, 1-dioxide derived 1, 4-disubtituted 1, 2, 3-triazole hybrids (7a-7m) were synthesized by Cu (I) catalyzed cycloaddition reaction and well characterized by (HNMR)-H-1, (CNMR)-C-13, FTIR, mass spectral and elemental analysis data. All the hybrid compounds were subjected to invitro anticancer activity against three human cancer cell lines MCF-7, Hela and A-549 and 2-hydroxy phenyl, 2-methoxy phenyl and 3-methoxy phenyl substituted (7f, 7g and 7h) derivatives were found to possess potential antiproliferative activity.