Acetic Acid → HCID 57799941, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-(3-fluoro-2-methylphenyl)-1-(2-fluorophenyl)-5-(3-methoxyphenyl)pentane-1,5-dione (8.4 g, 20.6 mmol) and Eschenmoser's salt (17.6 g, 94.9 mmol) in acetic acid (86 mL) was stirred at 120° C. under nitrogen for 16 h. An additional 3.8 g (20 mmol) of Eschenmoser's salt was added and the mixture heated an additional 5 h. The solution was allowed to cool to room temperature and concentrated in vacuo. The residue was dissolved in EtOAc (30 mL) and 9:1 hexanes/EtOAc, and then treated with 10% NaOH until the pH reached 11 (150 mL). After 30 min, the resulting brown solid was collected by filtration, triturated with EtOAc (3×50 mL), and dried under vacuum at 40° C. to give 2-((dimethylamino)methyl)-3-(3-fluoro-2-methylphenyl)-1-(2-fluorophenyl)-5-(3-methoxyphenyl)-4-methylenepentane-1,5-dione product (7.5 g, 76% crude yield) as a yellow solid (characterized by LCMS and 1H NMR, LRMS (M+H+) m/z=478.7.

Provenance & Evidence