Carbon Dioxide → Potassium Paraben

HRID 968987Notes

Reaction equation

[O-:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[K+:8].[C:9](=[O:11])=[O:10]>>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:9]([O-:11])=[O:10])=[CH:4][CH:3]=1.[K+:8]

Participants

Reactant 2

HCID 280Carbon Dioxide

HCID 23670670Potassium phenoxide

Product 1

HCID 23672310Potassium Paraben

Procedure

Parahydroxybenzoic acid has been used for manufacturing a wide variety of products including liquid crystalline polymers and preservatives for cosmetics and medicines. Generally, parahydroxybenzoic acid is prepared by a method in which phenol is reacted with potassium hydroxide to give potassium phenoxide, and the obtained potassium phenoxide is reacted with carbon dioxide under pressure to give potassium parahydroxybenzoate and then, parahydroxybenzoic acid is isolated by means of aciding out procedure, i.e. by adding a mineral acid to the salt.

Sources & evidence

ORD record: ord-b4805559bae74102af7bb35524b720ab
Source dataset: uspto-grants-2007_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07304182B2

Reaction notes

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