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Selenium heterocycles XXV. Synthesis of thieno[3,4-d][1,2,3]-thiadiazole, selenolo[3,4-d][1,2,3]thiadiazole and pyrrolo[3,4-d][1,2,3]-thiadiazole. Three novel ring systems

✍ Scribed by Abbas Shafiee


Book ID
112125294
Publisher
Journal of Heterocyclic Chemistry
Year
1978
Tongue
English
Weight
205 KB
Volume
15
Category
Article
ISSN
0022-152X

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An interesting synthesis of thieno[2,3-d
✍ Chad E. Stephens; J. Walter Sowell Sr. πŸ“‚ Article πŸ“… 2000 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 142 KB πŸ‘ 1 views

## Abstract Attempted hydrolysis of the ester of 3‐methoxycarbonyl‐1__H__‐thieno[2,3‐__e__][1,3,4]thiadiazine 4,4‐dioxide (**I**) under acidic conditions gave the ring‐contracted thieno[2,3‐__d__][1,2,3]thiadiazole (**V**) instead of the expected carboxylic acid. In addition to a discussion of the