Water → Methyl 3-Methoxy-2-naphthoate

A slurry of methyl 3-hydroxy-2-naphthoate (10.1 g, 50.1 mmol) and K2CO3 (7.96 g, 57.6 mmol) in DMF (200 mL) was stirred at room temp. for 15 min., then treated with iodomethane (3.43 mL, 55.1 mmol). The mixture was allowed to stir at room temp. overnight, then was treated with water (200 mL). The resulting mixture was extracted with EtOAc (2×200 mL). The combined organic layers were washed with a saturated NaCl solution (100 mL), dried (MgSO4), concentrated under reduced pressure (approximately 0.4 mmHg (5.2×10−4 atm) overnight) to give methyl 3-methoxy-2-naphthoate as an amber oil (10.30 g): 1H-NMR (DMSO-d6) δ 2.70 (s, 3H), 2.85 (s, 3H), 7.38 (app t, J=8.09 Hz, 1H), 7.44 (s, 1H), 7.53 (app t, J=8.09 Hz, 1H), 7.84 (d, J=8.09 Hz, 1H), 7.90 (s, 1H), 8.21 (s, 1H).

1. extractionThe resulting mixture was extracted with EtOAc (2×200 mL)
2. washThe combined organic layers were washed with a saturated NaCl solution (100 mL)
3. dry with materialdried (MgSO4)
4. concentrationconcentrated under reduced pressure (approximately 0.4 mmHg (5.2×10−4 atm) overnight)

ORD record

ord-4abe192d2e544c9abd1a92f13061aef4

Source dataset

uspto-grants-2009_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07528255B2