Glyceryl 1,3-Dilaurate → Vinyl laurate

1,3DLa was easily purified and recovered by crystallization in dry methanol at room temperature (RT) or in hexane at −20° C. (purity >98%). When lauric acid (La) was used as an acyl-donor, solvent was added to dissolve the FFA. Though the method as described in J. Am. Oil Chem. Soc., 1992, 69:955-960, allowed faster reaction rate with high yield of 1,3-DLa (65%), the highest yield (78%) of 1,3-DLa obtained from esterification between glycerol and lauric acid vinyl ester (LaVE) at 0° C. in a solvent-free condition catalyzed by CAL-B after 24 h, as illustrated in FIG. 14. FIG. 14 summarizes data of various synthesis of 1,3-dilaurin. Method1=esterification of glycerol and lauric acid in n-hexane at 0° C. catalyzed by CAL-B; Method2=esterification of glycerol and lauric acid vinyl ester in a solvent-free condition at 0° C. catalyzed by CAL-B; Method3 (Schneider's method)=esterification of glycerol (immobilized on silica gel) and lauric acid vinyl ester in MTBE at room temperature catalyzed by Lipozyme RM IM™ (Eurzyme, Dublin, Ireland). (DG=1,3-dilaurin, MG=1-monolaurin). LaVE, as acyl donor, allowed higher yield and faster reaction with less amount of MG than La.

1. custom1,3DLa was easily purified
2. customrecovered by crystallization in dry methanol at room temperature (RT)
3. customat −20° C.
4. additionwas added
5. dissolutionto dissolve the FFA
6. customreaction rate with high yield of 1,3-DLa (65%)

ORD-Eintrag

ord-ae25a2c0c38347718e5e7bbf3e3f1e6c

Quelldatensatz

uspto-grants-2015_05

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09034612B2