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Bridgehead nitrogen heterocycles. VI. Synthesis and characterization of some ring-fused 3-substituted 3H-[1,2,4] thiadiazolopyrimidines, -pyrazines, and -pyridazines

✍ Scribed by Potts, K. T.; Kane, J.


Book ID
120828007
Publisher
American Chemical Society
Year
1973
Tongue
English
Weight
412 KB
Volume
38
Category
Article
ISSN
0022-3263

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Heterocyclic synthesis containing bridge
✍ M. A. Raslan; M. A. Khalil πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 99 KB

## Abstract The reaction of 2H‐2‐oxobenzo[b]pyran‐3‐hydrazide (**2**) with carbon disulfide in basic DMF afforded potassium thiocarbamate **3**, which readily underwent heterocyclization upon its reaction with hydrazine and/or phenacyl bromide to yield 1,2,4‐tiazole (**4**) and thiazole 7 derivativ