Hydrochloric Acid → 2-Thiazolecarboxylic acid, 4-(1-methylethyl)-

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Reaction Steps

To a solution of ethyl 4-isopropylthiazole-2-carboxylate (9.1 g, 46 mmol) in THF (100 ml) and MeOH (30 ml) was added a solution of lithium hydroxide (1.16 g, 48.5 mmol) and the mixture was stirred for two days at room temperature. The mixture was acidified with 2M hydrochloric acid and extracted four times with diethyl ether. The organic phase was dried with sodium sulfate and evaporated under reduced pressure. Yield: 7.1 g, 90%.

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