Triethylamine hydrochloride → HCID 57498061, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-phenylamino-1H-pyrimidine-2,4-dione (0.25 g, 1.23 mmol) in phosphorous oxychloride (5 mL) was heated at 80° C. for 4 h, and room temperature for 20 h. Triethylamine hydrochloride (0.50 g, 3.69 mmol) was added and the reaction was stirred 6d at 80° C. and 6d at room temperature. Phosphorous oxychloride was evaporated (azeotroping with toluene), then the residue was cooled to 0° C. and diluted with ethyl acetate. Excess reagent was carefully quenched with ice-chips, then the mixture was washed with sodium bicarbonate and brine, was dried (sodium sulfate) and was evaporated. Purification by flash chromatography (SiO2) eluted with 1:9 ethyl acetate:hexanes provided (2,4-dichloro-pyrimidin-5-yl)-phenyl-amine (0.20 g, 67% yield) as a yellow oil. 1H-NMR (500 MHz, CDCl3) □ 8.33(s, 1H), 7.36 (t, 2H), 7.12 (m, 3H), 5.93 (s, 1H) ppm; MS (FIA) 335.9/337.9 (M+H); HPLC (method A) 3.554 min.

Provenance & Evidence