The Synthesis And Crystal Structure Of 3-[5-Methyl-1-(4-Methylphenyl)-1,2,3-Triazol-4-yl]-s-Triazolo[3,4-b]-1,3,4-Thiadiazole

Likewise the 1,3,4-thiadiazole nucleus which incorporates an N-C-S linkage exhibits a large number of biological activities^1]. The fused 1,3,4-triazolo3,4-b]-1,3,4-thiadiazoles derivatives show various biological effects, such as antifungal^2], antibacterial, hypotensive and CNS depressant activities^3]. The novel 3-5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo3,4-b]-1,3,4-thiadiazole 6 have been synthesized by the condensation of 4-amino-5-mercapto-3-5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazole 5 with formic acid in the presence of phosphorus oxychloride. The compound 5 was prepared from 4 that was prepared from 1 throng 2 and 3. Recently, we obtained the crystal structure of the novel compound 3-5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo3,4-b]-1,3,4-thiadiazole, C₁₄H₁₂Cl₃N₇S, Mr=416.72, Crystallizes in the triclinic space group with unit cell parameters a=9.049(2), b=10.486(3), c=10.843(2)Å, α=116.79(2), β=93.83(2), γ-100.64(3)°. V=889.3(4)ų, Z=1, Dx-0.778 Mgm^-3. The final R was 0.0535.