Sodium Hydroxide → HCID 86732967, compound

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Reaction Steps

A solution of 1.0 mmole of all-cis-(6-carboxy-2-cis-hexenyl)-3,4-oxidocyclopentanone (Example 62) and 3.0 mmoles of sodium carbonate in 15 ml. of water is allowed to stand at room temperature for 3 hours. The solution is acidified with HCL, saturated with sodium chloride, and extracted with ether. The extract is washed with brine, dried over magnesium sulfate and concentrated to give a mixture of the title compound and the isomeric compound, 2-(6-carboxy-2-cis-hexenyl)-3-hydroxycyclopent-4-en-1-one. Further treatment of this mixture with 0.1N sodium hydroxide at room temperature for 30 minutes causes the rearrangement of the latter isomer to the title compound, which is isolated from the basic solution as above.

Provenance & Evidence