Glycerol → 2,3-Dihydroxypropyl 3-oxobutanoate

Participants

Reaction Steps

In accordance with at least one other embodiment of the present technology, glycerol can be treated with ethyl acetoacetate in presence of a lipase at from about 55° C. to about 70° C., alternatively from about 20 to about 75, for approximately 14 to 48 hours, alternatively 20 to 36 hours. The lipase can be, for example, Novozyme® 435, Lipozyme® RM IM, or Lipozyme® TL IM, all available from Novozymes A/S, Franklinton, N.C. The reaction can be performed in an inert (e.g., nitrogen) atmosphere. During the reaction, ethyl alcohol by-product can be removed, for example, via distillation. At the end of the reaction, the remaining ethyl acetoacetate can be removed through distillation (e.g., at 60° C., 1 mmHg). The structure of the triglyceride of acetoacetin produced can be confirmed through, for example, NMR analysis and/or GC.

Provenance & Evidence