Sodium borohydride → HCID 10902156, compound

Participants

Reaction Steps

In 500 ml of tetrahydrofuran were suspended 62.4 g (0.2 mol) of the methyl (2S,3R)-2,3-epoxyoctadecanoate (V-1) prepared in Example 3-(3) and 7.4 g (0.2 mol) of NaBH4, followed by heat refluxing for 3 hours. After confirming disappearance of the compound (V-1) by TLC, tetrahydrofuran was evaporated. To the residue were added 20 ml of water and then 500 ml of a saturated ammonium chloride aqueous solution to adjust to pH 5 to 6, and the mixture was extracted with 500 ml of ethyl acetate. After drying, ethyl acetate was removed by evaporation, and the resulting crude crystals were recrystallized from heptane to obtain 42.6 g (0.15 mol; yield: 75%) of (2R,3R)-2,3-epoxyoctadecanol (melting point: 77 to 78° C.). Optical rotation [α]D25 =+24.5° (c=0.285, CHCl3)

Provenance & Evidence