Sodium Hydroxide → HCID 14270694, compound

Participants

Reaction Conditions

Reaction Steps

As shown in step 5-iii of Scheme 5, to an ice-cooled solution of (4S)-4-benzyl-3-[(2S)-2-(2-methoxyphenyl)-propanoyl]oxazolidin-2-one (3.10 g, 9.13 mmol) in THF (183 mL) and MeOH (1.24 mL) was added LiBH4 (9.13 mL of 2.0 M solution, 18.3 mmol) and the reaction was stirred at 0° C. for 2 hours, then warmed to room temperature over 18 hours. A solution of NaOH (18.6 mL of 2.0 M solution) was added and the reaction stirred until both layers were clear. The layers were separated and the aqueous layer was extracted with Et2O (2×). The organic extracts were combined and washed with H2O, brine, dried over MgSO4, filtered, and concentrated. The residue was purified by flash chromatography on silica gel (0 to 20% EtOAc in hexanes) to give (2S)-2-(2-methoxyphenyl)propan-1-ol (Compound 2016, 1.49 g, 95.4% yield) as a clear, colorless liquid: 1H NMR (300 MHz, CDCl3) δ 7.30-7.19 (m, 2H), 6.98 (td, J=7.5, 1.0 Hz, 1H), 6.95-6.86 (m, 1H), 3.85 (s, 3H), 3.83-3.63 (m, 2H), 3.56-3.38 (m, 1H), 1.84 (s, 1H), 1.30 (d, J=7.1 Hz, 3H); [α]D25.7+4.18 (c 1.11, CHCl3). This optical rotation compares with the rotation for Compound 2016 as described by Denmark S E et al. in J. Am. Chem. Soc. Vol. 132, pages 3612-3620 (2010) and by Matsumoto T et al., in Bull. Chem. Soc. Jpn. Vol. 58, 340-345 (1985).

Provenance & Evidence