Carbon Dioxide → 4-Hydroxybenzoic Acid

HRID 893436Notes

Reaction equation

HRID 893436 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C1([C:16]([O-:18])=[O:17])C(C)=CC=CC=1O.[K+].C(=O)=O>>[OH:7][C:1]1[CH:6]=[CH:5][C:4]([C:16]([OH:18])=[O:17])=[CH:3][CH:2]=1

Participants

4

Reactant 3

HCID 280Carbon DioxideHCID 996PhenolHCID 70420684Potassium meta cresolate

Product 1

HCID 1354-Hydroxybenzoic AcidYield 73.2%

Procedure

A pressure vessel was charged with 4.70 g of phenol, 25.57 g of potassium meta cresolate being in a dry powder form and 56 g of NeoSK 1400. With stirring, reaction was carried out at a carbon dioxide pressure of 9 kg/cm2 (G) and at 320° C. for one hour. An analysis of the reaction mixture after conversion to acid form showed a para-hydroxybenzoic acid yield of 73.2% on the basis of phenol.

Workup

  1. customreaction

Sources & evidence

ORD record
ord-8b4d97e246d24430a837bfe2b640c9ef
Source dataset
uspto-grants-1992_06
Patent number
US05124477

Reaction notes

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