1-Diethoxyphosphorylpropan-2-one → HCID 59684847, compound

Participants

Reaction Steps

A solution of diethyl (2-oxopropyl)phosphonate (250 mg, 1.29 mmol), 4-cyanobenzaldehyde (168.84 mg, 1.29 mmol), N-[3-(trifluoromethyl)phenyl]urea (263 mg, 1.29 mmol) and polyphosphoric acid ethyl ester (0.70 g) in tetrahydrofuran (5 ml) is refluxed overnight with stirring. The reaction solution is purified directly by preparative HPLC (RP18 column; eluent: acetonitrile/water 10:90→90:10). The fractions containing product are concentrated in vacuo and re-purified by flash chromatography on silica gel 60 with dichloromethane/methanol as eluent.

Provenance & Evidence