Sodium Carbonate → 2-(6-Carboxy-2-cis-hexenyl)cyclopent-2-en-1-one

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Reaction Steps

A solution of 3 g. of crude 2-(6-carboxy-2-cis-hexenyl)cyclopent-3-en-1-one (Example 56) in 100 ml. of aqueous sodium carbonate (pH: 10-11) is stirred at ambient temperatures under nitrogen for 4 hours. The solution is acidified to Congo Red and extracted into ether. The ethereal extracts are dried over sodium sulfate and evaporated at reduced pressure to afford the product. See also P. A. Griesco and J. J. Reap, J. Org. Chem., 38, 3413 (1973).

Provenance & Evidence