Tetrabutylammonium Fluoride → HCID 86712673, compound

Participants

Reaction Steps

TBAF (1.0 M in THF; 7.16 mL, 7.15 mmol) was added to a stirred solution of methyl 2-(4-(trifluoromethyl)-2-((trimethylsilyl)ethynyl)phenyl)acetate (A58) (1.50 g, 4.77 mmol) in THF (50 mL) at 0° C. After 5 minutes the resulting mixture was diluted with EtOAc (50 mL) then washed with 10% NaHCO3 (50 mL). The organic layer was dried (MgSO4) and evaporated under reduced pressure. The residue was adsorbed onto silica gel and purified by column chromatography (Biotage Isolera, SiO2 cartridge, 0-10% EtOAc in petroleum benzine 40-60° C.) to give the title compound A59 as a dark red liquid (956 mg, 83%); 1H NMR (400 MHz, CDCl3) δ 7.77 (d, J=1.2 Hz, 1H), 7.57 (dd, J=8.1, 1.4 Hz, 1H), 7.43 (d, J=8.1 Hz, 1H), 3.90 (s, 2H), 3.72 (s, 3H), 3.36 (s, 1H). LCMS-A: rt 6.099 min; m/z 243.1 [M+H]+.

Provenance & Evidence