Synthesis of Certain Fused 1,3,4-Thiadiazoles and 1,3,4-Thiadiazepine

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The synthesis of novel fused tricyclic bi ( s-triazolo [ 3,4-b: 3', 4*-d ) ) 1,3,4-thiadiazole (5) and s-triazolo [ 3'4': 5,4 ] 1,3,4-thiadiazolo [ 1,2-d ] tetrazole (7) and the bicyclic s-triazolo [3,4-b ] 1,3,4-thiadiazepine (8) are reported.

Synthesis; Thiadiazoles; Reported