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A convenient way is reported for the oxidation of organic diselenides 1, 3 to organoseleninic acids 2, 4 which were isolated and identified as pure compounds. Some ortho‐substituted phenyl diselenides 3d–f underwent oxidative cyclization, and the selenium‐containing heterocyclic compounds 5 were obtained.
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Kloc et al. (1989) studied this question.
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