Sodium Hydroxide → HCID 86732967, compound

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Reaction Steps

A solution of 1.0 mmole of all-cis-2-(6-carboxy-2-cis-hexenyl)-3,4-oxidocyclopentanone (Example 39) 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 N/10 sodium hydroxide at room temperature for 30 minutes causes the rearrangement of the latter isomer to the title compound, which is isolated from basic solution as above.

Provenance & Evidence