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US 3,976,677 AGranted
Process for carboxylating organic substrates with carbon dioxide in hydrocarbon solvents
AssigneeMontedison S.p.A.
InventorsGiorgio Bottaccio, Gian Paolo Chiusoli, Marcello Marchi
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Abstract
Carboxylable substrates i.e., ketones, esters, nitroparaffins and nitriles, containing activated hydrogen atoms are carboxylated by reaction with alkaline phenates and CO.sub.2 in at least one hydrocarbon solvent selected from aliphatic, alicyclic, aromatic and alkyl-aromatic hydrocarbon solvents.
Claims8
A process for carboxylating organic substrates containing at least one activated hydrogen atom, which consists in reacting the substrate with CO.sub.2 and an alkaline phenate selected from the group consisting of phenates substituted by
- a. an alkyl group containing from 3 to 30 carbon atoms bound to the phenolic nucleus in ortho or meta position or in para position through a tertiary or quaternary carbon atom;
- b. an alkyl group containing 1 to 20 carbon atoms bound to the phenolic nucleus in the ortho or meta positions through a primary or secondary carbon atom or by a phenyl group;
- and
- c. at least two alkyl groups containing 1 to 20 carbon atoms or phenyl groups in ortho and para positions;
- in a hydrocarbon solvent selected from the group consisting of aliphatic, alicyclic, aromatic, and alkyl-substituted aromatic solvents.
2 more elements
Dependencies are inferred from the claim text.