Hydrochloric Acid → HCID 67367711, compound

Participants

Reaction Steps

A solution of lithium hydroxide hydrate (103 mg, 2.4 mmol) in water (1 mL) was added to a solution of 3-(4-fluorophenyl)-6-methyl-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazin-1-one (200 mg, 0.8 mmol) in THF (9 mL) at room temperature. The reaction was stirred at room temperature for 2 days. The reaction mixture was then diluted with EtOAc (20 mL) and acidified to approx. pH 2 with 1 M HCl (aq). The organic layer was separated and the aqueous layer extracted further with EtOAc (2×20 mL). The combined organic layers were washed with water, dried (MgSO4), filtered and concentrated in vacuo to give 1-[2-(4-fluorophenyl)-2-hydroxyethyl]-5-methyl-1H-pyrrole-2-carboxylic acid as an off-white solid (211 mg, 98%). 1H NMR (400 MHz, CD3OD): δ 2.07 (s, 3H), 4.31 (dd, 1H, J 13.7, 7.9 Hz), 4.42 (dd, 1H, J 13.7, 4.9 Hz), 4.99 (dd, 1H, J 7.7, 5.1 Hz), 5.85 (dd, 1H, J 3.9, 0.7 Hz), 6.92 (d, 1H, J 3.9 Hz), 6.97-7.06 (m, 2H), 7.34 (dd, 2H, J 8.5, 5.5 Hz).

Provenance & Evidence