Water → 6-(2-(4,4-Dimethyl-thiochroman-6-yl)-ethynyl)-3-pyridylmethanol

関与物質

反応条件

反応手順

To 3.0 ml of 1M lithium aluminum hydride (3.0 mmol) in THF, cooled to -78° C., was added dropwise over 5 min a solution of 2.0 g (5.9 mmol) of ethyl 6-(2-(4,4-dimethylthiochroman-6-yl)-ethynyl)nicotinate in 5 ml of THF. The reaction mixture was stirred at -78° C. for 40 min and then treated with 2 ml of water. The mixture was warmed to room temperature and the organic layer was separated. The aqueous layer was extracted with 3×10 ml of ether. The organic extracts were combined and washed successively with 1×10 ml of dilute HCl, 3×10 ml of water and 1×15 ml of saturated NaCl solution and then dried (MgSO4). The solvent was removed in vacuo and the residue purified by flash chromatography (silica; 50% ethyl acetate in hexanes) to give the title compound as a pale yellow solid.

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