Selenium Dioxide → HCID 642459, compound

Participants

Reaction Steps

129.4 g of 2,6,6-trimethylcyclohex-2-ene-1,4-dione (from Example 1) were added to a solution of 100 g of selenium dioxide in a mixture of 800 ml of dioxane and 50 ml of water, and the mixture was refluxed for 9 hours with stirring. The precipitate of elemental selenium was then filtered off with suction, and then all the low boilers were removed in a rotary evaporator. The residue was distilled at 125° C./20 mbar. The distillate was melted, mortared with n-hexane and then extracted with 600 ml of n-hexane. The target product crystallized out in the form of yellow needles.

Provenance & Evidence