2,3-Butanediol → 1,4-Butanediol

HRID 1018872Notes

Reaction equation

HRID 1018872 reaction equation
[CH2:1]([OH:5])[CH:2]([OH:4])[CH3:3].[CH3:6][CH:7]([OH:11])[CH:8]([OH:10])[CH3:9]>>[CH2:1]([OH:5])[CH2:2][CH2:3][CH2:8][OH:10].[CH2:7]([OH:11])[CH2:8][CH2:9][CH2:1][CH2:2][OH:4].[CH2:1]([OH:5])[CH2:2][CH2:3][CH2:6][CH2:7][CH2:8][OH:10]

Participants

5

Reactant 2

HCID 2622,3-ButanediolHCID 1030Propylene Glycol

Product 3

HCID 80641,4-ButanediolHCID 81051,5-PentanediolHCID 123741,6-Hexanediol

Procedure

This can be accomplished by a partial replacement of the aforementioned diols by other diols such as 1,2-propane diol and 2,3-butane diol, or by using methyl-substituted dicarbonic acids. By using the aforementioned longer-chained glycols, such as 1,4-butane diol, 1,5-pentane diol and/or 1,6-hexane diol, elastomers of increased hydrolytic stability are obtained.

Sources & evidence

ORD record
ord-f98b5684cdcd476085d1c9f7a1c3922d
Source dataset
uspto-grants-2002_11
Patent number
US06485665B1

Reaction notes

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