Acetone → HCID 18947763, compound

Participants

Reaction Conditions

Reaction Steps

In 41.3 ml of ethanol was dissolved the methyl (-)-2-(benzo[b]thiophen-5-yl)-2-(tetrahydropyranyloxy)acetate, and to this solution was added 2.90 g of sodium borohydride, and the resulting mixture was stirred at 25° C. for 8 hours. Subsequently, 13.23 ml of acetone was 1 dropwise added with ice-cooling to decompose the excessive sodium borohydride, and thereafter, 138 ml of methylene chloride and 138 ml of water were added thereto, and the pH was adjusted to 8.5 with 2N hydrochloric acid. The organic layer formed was separated, washed with water, and then dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue thus obtained was washed with petroleum ether to obtain 12.0 g (yield: 96%) of colorless (-)-2-(benzo[b]thiophen-5-yl)-2-(tetrahydropyranyloxy)ethanol as a diastereomer mixture.

Provenance & Evidence