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To a mixture of ethyl 2-(isobutyrylamino)-1,3-thiazole-4-carboxylate (1.4 g) and tetrahydrofuran (28 ml) was added lithium borohydride (252 mg) portionwise, and the mixture was refluxed for 6 hours. The reaction mixture was cooled to 0° C., quenched with methanol (5 ml) and concentrated in vacuo. The residue was suspended with 10% methanol/chloroform (100 ml), and the insoluble materials were filtered off. The filtrate was purified by flash column chromatography on silica-gel with 5% methanol/chloroform as an eluent. The crystalline residue was collected and washed with diisopropyl ether to give N-[4-(hydroxymethyl)-1,3-thiazol-2-yl]-2-methylpropanamide (1.0 g).

1. temperaturethe mixture was refluxed for 6 hours
2. customquenched with methanol (5 ml)
3. concentrationconcentrated in vacuo
4. filtrationthe insoluble materials were filtered off
5. customThe filtrate was purified by flash column chromatography on silica-gel with 5% methanol/chloroform as an eluent
6. customThe crystalline residue was collected
7. washwashed with diisopropyl ether