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2005
Organo-selenium compounds
S 0130
Benzo[1,2-c:3,4-c']bis[1,2,5]selenadiazole, [1,2,5]Selenadiazolo[3,4-e]-2,1,3-benFurazanobenzo-2,1,3-thiadiazole, Furazanobenzo-2,1,3-selenadi20- 186 zothiadiazole,
azole and Related Heterocyclic Systems. — The first synthesis of benzobisselenadiazole (IV) by a three-step route starting from commercially available nitrobenzoselenodiazole (I) is developed. In addition, improved syntheses of the related heterocycles
(VI) and (IX) are reported. During the synthesis of (VIII) an equilibrium mixture of
N-oxides is observed. Their solvent and concentration dependence is investigated. —
(CILLO, C. M.; LASH*, T. D.; J. Heterocycl. Chem. 41 (2004) 6, 955-962; Dep.
Chem., Ill. State Univ., Normal, IL 61790, USA; Eng.) — Bartels
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