Ethyl Lactate → Lactic Acid

HRID 1773844Notes

Reaction equation

HRID 1773844 reaction equation
[C:1]([O:6][CH2:7][CH3:8])(=[O:5])[CH:2]([CH3:4])[OH:3]>C(O)C>[C:1]([O:6][CH2:7][CH3:8])(=[O:5])[CH:2]([CH3:4])[OH:3].[C:1]([OH:6])(=[O:5])[CH:2]([CH3:4])[OH:3]

Participants

4

Reactant 1

HCID 7344Ethyl Lactate

Product 2

HCID 612Lactic AcidHCID 7344Ethyl Lactate

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

The compositions of biosolvents are obtained by mixing ethyl lactate with the desired fatty acid esters. Ethyl lactate is produced by esterification of lactic acid with ethanol. However, a major problem of this reaction is that it is balanced. It is therefore necessary to displace the equilibrium for obtaining a suitable yield. This is notably possible by using excess ethanol or by continuously drawing off the water formed during the reaction. The solutions presently set into place for solving this major problem are at the origin of a substantial increase in the cost of ethyl lactate. Another problem is the oligomerization of lactic acid during the reaction.

Workup

  1. customThe compositions of biosolvents are obtained

Sources & evidence

ORD record
ord-8dabff8be532427d8518871f8d01a64e
Source dataset
uspto-grants-2016_02
Patent number
US09255218B2

Reaction notes

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