Reaktion #501127

ord-2c9a9a53857a4249afafd8a9b5ee6d78

Reaktionsgleichung

CC(=O)O
acetic acid
O=CC(O)C(O)C(O)CO
Pentose
O=C[C@H](O)[C@@H](O)[C@H](O)CO
xylose
→
O=C[C@H](O)[C@@H](O)[C@H](O)CO
xylose
CC(O)C(=O)O
lactic acid

Edukte

CC(=O)O
acetic acid
O=CC(O)C(O)C(O)CO
Pentose
O=C[C@H](O)[C@@H](O)[C@H](O)CO
xylose

Reagenzien

Keine

Reaktionsbedingungen

Detaillierte Bedingungen
See reaction.notes.procedure_details.

Vorschrift

Pentose such as xylose may be converted by hetero-lactic fermentation to produce 1 mol of lactic acid and 1 mol of acetic acid from 1 mol of xylose. Hetero-lactic fermentation is conducted while neutralizing with ammonia to yield ammonium lactate and ammonium acetate. Ammonium lactate and ammonium acetate are esterified with ethanol to produce ethyl lactate and ethyl acetate, respectively. Ammonia generated at the time of esterification is recovered. Unreacted ethanol is distilled off, and purification of ethyl lactate is performed by distillation with removing and recovering ethyl acetate. Ethyl acetate is useful as a solvent.

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06569989B2uspto-grants-2003_05