Water → 2-(2-Phenyl-4-thiazolylmethoxy)-5-pyridylmethanol

関与物質

反応手順

Sodium hydride (60%, oily, 1.40 g) was added to a solution of 2-phenyl-4-thiazolylmethanol (6.69 g) and methyl 6-chloro-3-pyridinecarboxylate (6.01 g) in N,N-dimethylformamide (100 ml) at 0° C., and the mixture was stirred for 30 minutes. The reaction mixture was poured into water, which was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride solution, dried (MgSO4), and concentrated. Lithium aluminium hydride (1.33 g) was added to a solution of the residue in tetrahydrofuran (150 ml) at 0° C., which was stirred at room temperature for 10 minutes. Sodium sulfate decahydrate (11.3 g) was added to the reaction mixture, which was stirred for 30 minutes at room temperature. The precipitate was removed by filtration, and the filtrate was concentrated. The residue was subjected to silica gel column chromatography to obtain 6-(2-phenyl-4-thiazolylmethoxy)-3-pyridylmethanol (5.81 g, yield 56%) as colorless crystals from the fraction eluted with tetrahydrofuran. This was recrystallized from tetrahydrofuran-hexane. Melting point: 134–135° C.

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