Potassium Hydroxide → 2-(1H-imidazol-2-yl)-4-methoxy-7-(tetrahydro-pyran-4-yl)-benzothiazole

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반응 단계

0.085 g of 1H-Imidazole-2-carbothioic acid [2-methoxy-5-(tetrahydro-pyran-4-yl)-phenyl]-amide (0.27 mmol) was taken up in water (6.0 ml) and treated with 0.06 g KOH (1.07 mmol) and 0.331 g of potassium hexacyano ferrate (1.0 mmol) at reflux for 16 h. After cooling to ambient temperature water (10 ml) was added and the reaction mixture was extracted with methylene chloride and dried over sodium sulfate. The residue was dried in vacuo at 40° C. One obtained 0.035 g of 2-(1H-imidazol-2-yl)-4-methoxy-7-(tetrahydro-pyran-4-yl)-benzothiazole (41%) as a light brown solid; M.p.: 220–224° C.

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