Tetrahydrofuran → HCID 90418558, compound

Participants

Reaction Conditions

Reaction Steps

Into a 50-mL round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed 1-bromo-2-fluoro-4-methoxy-3-(trifluoromethyl)benzene (380 mg, 1.39 mmol, 1.00 equiv), tetrahydrofuran (5.0 mL). This was followed by the addition of n-BuLi (2.5M) (0.62 mL, 1.10 equiv) dropwise with stirring at −78° C. The mixture was stirred for 1 h at −78° C. To this was added N,N-dimethylformamide (1.0 mL) and the resulting solution was stirred for 30 min at −78° C. in a liquid nitrogen bath. The reaction progress was monitored by GCMS. The reaction was then quenched by the addition of 2 mL of water. The resulting solution was extracted with 3×10 mL of ethyl acetate and the organic layers combined and dried in an oven under reduced pressure. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:4). This resulted in 0.140 g (45%) of 2-fluoro-4-methoxy-3-(trifluoromethyl)benzaldehyde as a light yellow solid. Mass spectrum (GC, m/z): Calcd. for C9H6F4O2, 222.0 (M). found 222.0.

Provenance & Evidence