Carboxylation of phenols
Abstract
Abstract SUBSTITUTED AROMATIC PHENATES OF THE FORMULA: R1,R2,R3,R4,R5,(MO-)-BENZENE WHEREIN THE GROUPS REPRESENTED BY R''S ARE SELECTED FROM HYDROGEN, HALOGEN, ALKYL, ALKYLTHIO, ALKOXY, DIALKYLAMINO, BENZYL AND ALPHA-METHYLBENZYL AND WHEREIN TWO OF SAID R''S CAN BE TAKEN TOGETHER TO FORM A NAPHTHYL OR QUINOLINE RING, PROVIDING THAT NOT MORE THAN FOUR R''S ARE HYDROGEN; AND M IS A METAL, PREFERABLY AN ALKALI METAL, ARE CARBOXYLATED BY REACTION WITH CARBN DIOXIDE IN GOOD YIELD IN THE PRESENCE OF AN ALIPHATIC N,N-DIMETHYLAMIDE HAVING FROM 3 TO 10 CARBON ATOMS, AND PREFERABLY IN THE PRESENCE OF AN EXCESS OF METAL ALKOXIDE BASED ON THE CARBON DIOXIDE. PREFERABLY AMIDES ARE DIMETHYLFORMAIDE AND DIMETHYLACETAMIDE.
Inventors
- 👤 W Meek
Bibliographic Details
Claims Analysis
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