Hydrochloric Acid → 2,6-Dichlorobenzylphosphonic acid

Participants

Reaction Steps

O,O-Diethyl 2,6-dichlorobenzylphosphonate (1794 grams) and concentrated hydrochloric acid (2 l) were charged into a glass reaction vessel equipped with a mechanical stirrer, thermometer and reflux condenser. The reaction mixture was heated at reflux for a period of 16 hours. The mixture was then cooled in the formation of a solid product. This product was recovered by filtration was washed with water and dried to yield the desired product 2,6-dichlorobenzylphosphonic acid having a melt point of 211° to 218° C.

Provenance & Evidence