Process for preparing 3-hydroxy-3-methylbutyric acid or its salts

摘要

In a new process for preparing 3-hydroxy-3-methylbutyric acid or one of its salts, ketene is reacted with acetone, yielding dioxanone, and the dioxanone is then hydrolysed. The 3-hydroxy-3-methylbutyric acid or its salts are useful in preparations for inhibiting protein depletion or as immunostimulating feedstuff additives for mammals.