Carbon Dioxide → 4-Hydroxybenzoic Acid

HRID 893434Notes

Reaction equation

HRID 893434 reaction equation
[C:1]1([O-:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[K+].C1([C:17]([O-:19])=[O:18])C(C)=CC=CC=1O.[K+].C(=O)=O>>[OH:7][C:1]1[CH:6]=[CH:5][C:4]([C:17]([OH:19])=[O:18])=[CH:3][CH:2]=1

Participants

4

Reactant 3

HCID 280Carbon DioxideHCID 23670670Potassium phenoxideHCID 70420684Potassium meta cresolate

Product 1

HCID 1354-Hydroxybenzoic AcidYield 80%

Procedure

A pressure vessel was charged with 6.98 g of potassium phenolate, 7.54 g of potassium meta cresolate and 25 g of NeoSK 1400. With stirring at 1,000 r.p.m., reaction was carried out at a carbon dioxide pressure of 7 kg/cm2 (G) and at 300° C. for one hour. An analysis of the reaction mixture after conversion to acid form showed a para-hydroxybenzoic acid yield of 80.0% on the basis of potassium phenolate, with 3.6% salicylic acid forming as a by product.

Workup

  1. custom, reaction

Sources & evidence

ORD record
ord-818d3c0a448f4b418625da5d68cc4db8
Source dataset
uspto-grants-1992_06
Patent number
US05124477

Reaction notes

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