Phosphorus oxide (P4O10) → HCID 25230337, compound

Participants

Reaction Steps

To a stirring solution of phosphorus pentoxide (0.38 g, 1.30 mmol) in DCM (8 ml) at 0° C. was added a solution of 5-{4-[2-(3-chlorophenyl)-2-hydroxyethoxy]benzyl}-1,3-thiazolidine-2,4-dione (0.25 g, 0.66 mmol) in DCM (8 ml) followed by dimethyl sulfoxide (0.23 mL, 3.30 mml). After stirring for 15 minutes N,N-diisopropylethylamine (0.34 mL, 2.00 mmol) was added. After 45 minutes the reaction was poured into cold sat'd NaHCO3 and the mixture was extracted with EtOAc (x2). The combined extracts were washed with brine, dried (Na2SO4), filtered and evaporated in vacuo. The residue was chromatographed on a small silica gel column eluting with 0-15% EtOAc/DCM. Fractions containing product were combined and evaporated in vacuo to give 117 mg (47%) of a white solid. MS (ESI−) for C18H14ClNO4S m/z 374.1 (M−H)−.

Provenance & Evidence