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Synthesis and Characterization of Novel Azole Heterocycles Based on 2,5-Disubstituted Thiadiazole
1,3,4-thidiazoles fused heterocyclic ring Schiff bases
2010/4/16
Starting from 2-amino-5-mercapto-1,3,4-thiadiazole (1), a variety of new 1,2,4-triazino[5,4-b][1,3,4] thiadiazole (3), pyrazole (4), [1,2,4]triazolo[3,4-b] [1,3,4]thiadiazole (5), phthalazine-3,6-dion...
Synthesis of Nitrogen-Containing Heterocycles from the Reaction of Amidrazones with a-Haloesters
Amidrazones a-haloesters 4,5-dihydro-1,2,4-triazin-6-one
2010/4/16
The reaction of amidrazones 1 with a-haloesters 2 formed 1,3,5-substituted 4,5-dihydro-1,2,4-triazin-6-ones (4a-z) rather than 1,2,4-triazin-5-one derivatives (5a-z). The microanalysis and spectral da...
Heterocyclic Synthesis Using Nitrilimines: Part 5. Synthesis of Some Novel Spiro Heterocycles
Cycloaddition benzoylhydrazones nitrilimines spiro-triazoles
2010/4/19
A new class of spiro-triazoles (4a-m) were synthesized from the reaction of corresponding nitrilimines 2 with substituted heterocyclic benzoylhydrazones 3 in good yields. The spectral data of the new ...