Improved and Efficient Synthesis of Bis(cycloocteno)‐1,4‐Diselenin in High‐Boiling Solvents

Dicycloocta‐(1,4)‐diselenin, I is prepared by heating cycloocteno‐1,2,3‐selenadaizole in various high boiling solvent such as ethylene glycol, dimethylsulfoxide (DMSO), N,N'‐dimethylformamide (DMF) and Xylene. Pale yellow crystalline product is characterized by absorption spectroscopy, proton and carbon NMR, elemental analysis and by mass spectrometry. This is the first report on synthesis of compound 1 at normal pressure. The compound 1 is also for the first time, obtained by self dimerisation of the parent 1,2,3‐selenadiazole due to possible photolysis, over prolonged storage in the refrigerated conditions.

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