Phosphorus oxide (P4O10) → HCID 12415172, compound

Participants

Reaction Steps

Phosphorous pentoxide (25 g, 0.176 mol) was added to a stirred solution of the product from (a) above (14.47 g, 0.075 mol) in xylene (35 ml) and the resulting mixture heated under reflux for 2.5 hours. The solvent was decanted from the resulting black gum which was triturated with xylene and then, when cool, with ether. Water was then carefully added, with ice-cooling, and the resulting mixture basified with 2M aqueous sodium hydroxide solution and then extracted with ether. The extract was washed with water, dried (MgSO4) and evaporated under reduced pressure to give a brown oil (13.4 g) which was purified by chromatography on silica gel, using ether as eluant, to afford the required compound (5.88 g) as an orange oil. Rf 0.28 (SS 2).

Provenance & Evidence