FIELD: chemical technology.
SUBSTANCE: invention describes a method for preparing substituted selenopyranes. The corresponding 4-K-2,3-tetramethylene-[3.3.1]-bicyclonone-9-ol-2 is melted in the presence of sodium hydroxide, placed in mixture of acetic acid with acetic anhydride and oxygen is substituted for selenium under condition of acidic catalysis followed by isolation of the end product.
EFFECT: improved preparing method.
2 ex
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