Ethyl 5-(2-propyl-5-thiazolyl)2,4-pentadienoate → 2-Propyl-5-thiazole-pentanoic acid

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Reaction Steps

Using the procedure of Example 10, ethyl 5-(2-propyl-5-thiazolyl)2,4-pentadienoate was reacted with hydrogen in the presence of activated carbon containing 10% palladium and the resulting product was saponified to obtain 2-propyl-5-thiazole-pentanoic acid. The latter product was reacted with α,β-ethanedisulfonic acid to obtain the hemi-α,β-ethane disulfonate of 2-propyl-5-thiazole-pentanoic acid melting at 124°C.

Provenance & Evidence