Potassium Hydroxide → HCID 58551608, compound

Participants

Reaction Steps

2-Fluoro-5-methoxy-4-(2-methoxyethoxy)benzaldehyde (0.36 g, 1.6 mmol) was suspended in a mixture of dioxane (1.5 mL) and KOH (16 mL of 0.2 M, 3.2 mmol). KMnO4 (370 mg, 2.4 mmol) was added and the mixture was stirred vigorously for 30 minutes. The reaction mixture was filtered and the filtrate was concentrated to 10 mL (blue soln). HCl (4M, mL) was added and the resulting precipitate was filtered and washed with 1M HCl and then water (1 mL) to yield 2-fluoro-5-methoxy-4-(2-methoxyethoxy)benzoic acid (300 mg, 78%) as a white solid. ESI-MS m/z calc. 244.1, found 245.1 (M+1)F. Retention time: 1.01 minutes (3 min run). 1H NMR (400 MHz, DMSO) δ 12.96 (s, 1H), 7.30 (d, J=7.0 Hz, 1H), 6.98 (d, J=12.5 Hz, 1H), 4.20-4.13 (m, 2H), 3.78 (s, 3H), 3.71-3.63 (m, 2H), 3.31 (s, 3H).

Provenance & Evidence