Methyl Acrylate → Gamma-Decalactone

Temperatur

165 °C

To an autoclave (a volume of 1 L) was charged 349 g (3.0 mol) of n-heptanol and 0.06 g (0.27 mmol) of zinc bromide. The mixture was heated and stirred at 165° C. Into the mixture in this state was injected a mixed liquor of 57 g (0.66 mol) of methyl acrylate and 9.9 g (0.068 mol) of di-t-butylperoxide over 6 hours. The resulting mixture was stirred at the temperature for further 1 hour. Subsequently, unreacted n-heptanol was distilled off followed by vacuum distillation, yielding γ-decalactone. Gas chromatographic analysis showed that the yield of γ-decalactone was 69%. The resulting γ-decalactone was plastic-like in odor and acidulous, which indicated an inferior aroma.

1. temperatureThe mixture was heated
2. customover 6 hours
3. stirringThe resulting mixture was stirred at the temperature for further 1 hour
4. distillationSubsequently, unreacted n-heptanol was distilled off
5. distillationfollowed by vacuum distillation

ORD-Eintrag

ord-3d1c89f5dbb44175a99bc0e45cabbbda

Quelldatensatz

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07897802B2