Phenol → tert-butyl ((3R)-3-hydroxy-3-(3-((tetrahydro-2H-thiopyran-3-yl)methoxy)phenyl)propyl)carbamate

Participants

Reaction Conditions

Reaction Steps

K2CO3 (0.72 g, 5.24 mmol) and phenol (7, Intermediate I) (0.3 g, 1.05 mmol) were added to a solution of (tetrahydro-2H-thiopyran-3-yl)methyl 4-methylbenzenesulfonate (0.29 g, 1.10 mmol) in DMF (10 mL). The reaction mixture was heated at 100° C. under reflux overnight and then cooled. The reaction mixture was extracted with EtOAc, organic layer was dried over anhydrous Na2SO4 and concentrated under reduced pressure. Purification by flash chromatography (EtOAc:hexane 10-40% gradient) gave tert-butyl ((3R)-3-hydroxy-3-(3-((tetrahydro-2H-thiopyran-3-yl)methoxy)phenyl)propyl)carbamate as a light green solid. Yield (0.21 g, 52%); 1H NMR (400 MHz, CDCl3): δ 7.24 (t, J=8.0 Hz, 1H), 6.91 (d, J=8.0 Hz, 2H), 6.78 (d, 1H), 4.87 (bs, 1H), 4.71 (bs, 1H), 3.84-3.80 (m, 2H), 3.49 (bs, 1H), 3.21-3.13 (m, 2H), 2.82-2.77 (m, 1H), 2.62-2.47 (m, 3H), 2.18 (bs, 1H), 2.08-2.04 (m, 1H), 1.91-1.74 (m, 4H), 1.45 (s, 9H), 1.30-1.20 (m, 3H); MS: m/z 382.2 [M+H]+.

Provenance & Evidence