Carbon Dioxide → HCID 86735988, compound

Participants

Reaction Steps

A slurry of 1.00 kilogram of racemic DL-pantolactone and 300 grams of lithium carbonate in 1.5 liters of water was continuously stirred and heated at boiling temperature in a flask provided with a stirrer and reflux condenser for 1.5 hours. After all the evolved carbon dioxide had been expelled, the reaction mixture was filtered while hot and 25 grams of lithium carbonate was thus recovered therefrom. When the filtrate was cooled and stirred, 700 grams of crystals of racemic DL-lithium pantoate monohydrate having a melting point of 107°-110° C, amounting to 53.0% of the theoretical yield, separated and was collected. By evaporation of the mother liquor a further amount of DL-lithium pantoate, equivalent to 42% of the original DL-pantolactone, was recovered.

Provenance & Evidence