Lithium oxalate → HCID 86735988, compound

Participants

Reaction Steps

A slurry of 334 grams of DL-calcium pantoate and 102 grams of lithium oxalate in 600 grams of water was heated at boiling temperature with continuous stirring in the apparatus described in Example 1 for 4 hours. The resulting mixture was then filtered while hot and the calcium oxalate that was thus separated was washed three times with 70-milliliter portions of hot water. The filtrate and wash waters were then combined and evaporated in a rotary vacuum evaporator to a volume of 400 milliliters during which 254 grams of DL-lithium pantoate monohydrate having a melting point of 107°-110° C, equivalent to 74% of the theoretical yield, separated and was collected. From the mother liquor by further concentration, DL-lithium pantoate monohydrate, in an amount equivalent to 20% of the original DL-pantolactone, was recovered.

Provenance & Evidence