Some new target products 5‐aryl‐4,5‐dihydro‐3‐(5‐methyl‐1‐p‐tolyl‐1H‐1,2,3‐triazol‐4‐yl)‐1‐(4‐phenylthiazol‐2‐yl)pyrazoles 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j have been synthesized by reaction of 2‐bromo‐1‐phenylethanone and compounds 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4j which were prepared from the combination of thiosemicarbazide and (E)‐3‐aryl‐1‐(5‐methyl‐1‐p‐tolyl‐1H‐1,2,3‐triazol‐4‐yl)‐prop‐2‐en‐1‐ones 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j. All the structures were established by MS, IR, CHN, and 1H NMR spectra data. Synthesis of structure diversity is applied. J. Heterocyclic Chem., (2011).

in Wiley InterScience (www.interscience.wiley.com).Several 2-amino-6-(1-aryl-5-methyl-1H-1,2,3-triazol-4-yl)-4-phenylpyridine-3-carbonitrile have been synthesized by Tandem Michael addition/imino-nitrile cyclization and the structures of these compounds were established by MS, IR, CHN, and 1 H NMR spectral data. The crystal structure of 2-amino-6-[1-(4-methoxyphenyl)-5-methyl-1H-1,2,3-triazol-4-yl]-4-phenylpyridine-3-carbonitrile was established by X-ray diffraction.

All products are purified by recrystallization from ethanol.

Tandem Michael Addition/Imino-Nitrile Cyclization Synthesis of 2-Amino--6-(1-aryl-5-methyl-1H-1,2,3-triazol-4-yl)-4-phenylpyridine-3-carbonitrile. -The crystal structure of compound (IVc) is established by X-ray diffraction. -