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Fifteen pyridine and substituted benzene diselenides,seleninic acids and seleninic anhydrideshave been synthesized.Among them,4,4’-dipyridinediselenide,bis(2,4-dimethoxyphenyl)diselenide,2,4-dimethoxyphenyl seleninic acid,2-pyridineseleninic acid,2-pyridineseleninic anhydride,4-pyridine-seleninic anhydride,2-nitrophenyl seleninic anhydride and 4-nitrophenyl seleninic anhydride werenew compounds.Their regioselective oxidation or dehydrogenation of β-pinene,3β-benzoyloxycholest-5-ene and androstan-3-one have been studied and compared.2-Pyridineseleninic anhydride is amore efficient oxidant than the others;most of the substituted benzeneseleno derivatives did notgive the expected products.
Fifteen pyridine and substituted benzene diselenides, seleninic acids and seleninic anhydrides have been synthesized. Among them, 4,4’-dipyridinediselenide, bis (2,4-dimethoxyphenyl) diselenide, 2,4-dimethoxyphenyl seleninic acid, pyridineseleninic anhydride, 4-pyridine-seleninic anhydride, 2-nitrophenyl seleninic anhydride and 4-nitrophenyl seleninic anhydride were new compounds.Their regioselective oxidation or dehydrogenation of β-pinene, 3β-benzoyloxycholest-5-ene and androstan-3-one have been studied and compared.2-Pyridineseleninic anhydride is amore efficient oxidant than the others; most of the substituted benzeneseleno derivatives did not give the expected products.