Acetophenone → 1,2,3,4-Tetrahydro-2-naphthalenol

Participants

Reaction Conditions

Reaction Steps

In situ Preparation of the Compound of Formula (II) wherein R1 is ##STR11## Borane methylsulfide complex (neat, ~10M, 1.4 mL, 14 mmol) was added to a solution of cis, exo-3-amino-2-hydroxybornane [J. Chem. Soc. 49, 1970] (169 mg, 1 mmol) in THF (70 mL) at ambient temperature and was stirred for 16 hours. Acetophenone (2.36 g, 24.6 mmol) as a solution in THF (10 mL) was added to the preceding solution over one hour, stirred for fifteen minutes after addition was completed, cooled to 0° C., and quenched with methanol (27 mL). After stirring the quenched reaction for 18 hours, the solvents were removed under vacuum, the residual oil was dissolved in methylene chloride (50 mL), washed with pH 4 phosphate buffer (50 mL), water (50 mL), treated with magnesium sulfate, and the solvent was removed under vacuum to give the (R) phenethyl alcohol. 2.17 g (92% yield) 88% ee.

Provenance & Evidence