Glutaric Acid → Dimenthyl glutarate
Reaction equation
[CH:1]1([CH3:11])[CH2:6][CH2:5][CH:4]([CH:7]([CH3:9])[CH3:8])[CH:3]([OH:10])[CH2:2]1.[C:12]([OH:20])(=[O:19])[CH2:13][CH2:14][CH2:15][C:16]([OH:18])=[O:17]>>[C:12]([O:10][CH:3]1[CH:4]([CH:7]([CH3:8])[CH3:9])[CH2:5][CH2:6][CH:1]([CH3:11])[CH2:2]1)(=[O:19])[CH2:13][CH2:14][CH2:15][C:16]([O-:18])=[O:17].[C:16]([O:18][CH:3]1[CH:4]([CH:7]([CH3:9])[CH3:8])[CH2:5][CH2:6][CH:1]([CH3:11])[CH2:2]1)(=[O:17])[CH2:15][CH2:14][CH2:13][C:12]([O:10][CH:3]1[CH:4]([CH:7]([CH3:8])[CH3:9])[CH2:5][CH2:6][CH:1]([CH3:11])[CH2:2]1)=[O:20]Participants
4
Procedure
The inventive process is simple to practice using conventional equipment and techniques. Menthol and excess glutaric acid are reacted under conditions effective to produce a mixture comprising monomenthyl glutarate and dimenthyl glutarate. The initial weight ratio of glutaric acid to menthol is adjusted to range from 1.0 to 1.6, preferably from 1.05 to 1.56. This provides a product mixture that comprises from 60 to 70 wt. % of MMG and from 30 to 40 wt. % of DMG.