[1,2,5]Selenadiazolo[3,4-c][1,2,5]thiadiazole and [1,2,5]Selenadiazolo[3,4-c][1,2,5]thiadiazolidyl – A Synthetic, Structural, and Theoretical Study
✍ Scribed by Irina Yu. Bagryanskaya; Yuri V. Gatilov; Nina P. Gritsan; Vladimir N. Ikorskii; Irina G. Irtegova; Anton V. Lonchakov; Enno Lork; Ruediger Mews; Victor I. Ovcharenko; Nikolay A. Semenov; Nadezhda V. Vasilieva; Andrey V. Zibarev
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 276 KB
- Volume
- 2007
- Category
- Article
- ISSN
- 1434-1948
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## Abstract The first synthesis of benzo[1,2‐__c__:3,4‐__c__']bis[1,2,5]selenadiazole has been developed starting from commercially available 4‐nitrobenzo‐2,1,3‐selenadiazole. Improved syntheses of the related heterocycles [1,2,5]selenadiazolo[3,4‐__e__]‐2,1,3‐benzothiadiazole, furazanobenzo‐2,1,3‐
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract Dehydrogenation of ethyl 3‐methyl‐4‐oxo‐4,5,6,7‐tetrahydrobenzofuran‐2‐carboxylate 1 with 2,2′‐azobi‐sisobutyronitrile and __N__‐bromosuccinimide gave ethyl 4‐hydroxy‐3‐methylbenzofuran‐2‐carboxylate **3**. Reaction of compounds **3–4** with hydrazine hydrate afforded the corresponding