Triethylamine → HCID 54724205, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 3-bromo-1-(3-fluorobenzyl)-4-hydroxy-6-methylpyridin-2(1H)-one (0.86 g, 0.0028 mol) in dichloromethane (15.0 mL) cooled to −30° C., triethyl amine (0.5 mL, 0.004 mol) and trflic anhydride (0.7 mL, 0.0042 mol) were added and stirred for 1 h. The resulting orange solution was poured into ice cold water (25 mL) and extracted with dichloromethane (2×25 mL) The combined organic extracts were washed with water, dried (Na2SO4) and concentrated under reduced pressure. The resulting residue was purified by silica gel flash chromatography using 1:1 EtOAc/hexane v/v to afford 1.0 g (85%) the title compound as a light brown solid: 1H-NMR (CDCl3/400 MHz) δ 7.32 (m, 1H), 7.0-6.85 (m, 3H), 6.18 (s, 1H), 5.32 (s, 2H), and 2.34 (s, 3H); ES HRMS m/z 443.9492 (M+H C14H11NO4BrF4S requires 443.9528). Step 4: Preparation of 3-bromo-1-(3-fluorobenzyl)-6-methyl-4-(phenylethynyl)pyridin-2(1H)-one

Provenance & Evidence