Phosphoric Acid → HCID 18958205, compound

Participants

Reaction Conditions

Reaction Steps

Into a 50 millimeter glass reactor equipped with a thermometer connected to a temperature controller, a heating mantle, a condenser and a magentic stirring bar, is charged 5 gms (0.0164 mole) of tri-o-tolyl phosphine and 23 gms of toluene. The slurry is heated to 27° C., then 3.08 gms (0.0177 mole) of ethyl iodide is added. This reaction mass is heated to 70° C. and maintained at that temperature for 17 hours, then heated to 100° C. and maintained at that temperature for 9 hours, then cooled to 70° C. and maintained at that temperature for 15 hours, then cooled to 26° C. and the resulting phosphonium salt collected by filtration. The salt is washed with 6 gms of toluene then vacuum dried. There if obtained 1.6 gms of catalyst which has a melting point of 247°-250° C. and a chemical shift of 28.5 ppm (phosphoric acid reference).

Provenance & Evidence