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1-Hydrazonyltetrazoles: Fragmentative cyclisation - a new route to substituted 1,2,4-triazoles.

✍ Scribed by Richard N. Butler; Kevin J. Fitzgerald; Mary T. Fleming


Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
116 KB
Volume
27
Category
Article
ISSN
0040-4039

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## Abstract The reaction of benzil 1‐ureidoethylidene hydrazones 8 with a mixture of triphenylphosphine, carbon tetrachloride, and triethylamine provides a general route to 7__H__‐imidazo[1,2‐__b__][1,2,4]triazoles 18 __via__ the thermal reaction of the expected keto azine carbodiimide intermediate