Triethylamine → HCID 89718627, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-fluoro-2-iodobenzoic acid (9.04 g, 34.0 mmol), but-3-yn-2-ol (5.7 mL, 5.46 g, 78.0 mmol), ZnCl2 (4.62 g, 34.0 mmol), Pd(Ph3P)4 (1.96 g, 1.7 mmol), Et3N (14.2 mL, 10.3 g, 102.0 mmol) and DMF (50 mL) was stirred under argon at 100° C. for 2 hours. After the removal of the volatiles under vacuum, the residue was chromatographed (silica gel, ethyl acetate in hexanes, 0-50%) to provide intermediate 7-fluoro-3-(1-hydroxyethyl)-1H-isochromen-1-one as a brown oil (5.93 g, 84%). MS m/z 209.2 [M+H]+; 1H NMR (500 MHz, CDCl3-d): 6 ppm 7.91-7.96 (1H, m), 7.43-7.47 (2H, m), 6.55-6.59 (1H, m), 4.67 (1H, q, J=6.52 Hz), 1.57 (3H, d, J=6.62 Hz).

Provenance & Evidence