Process for the carboxylation of organic substrates with carbon dioxide

Abstract

Abstract A process is disclosed for the carboxylation of organic substrates or reactants containing at least one active hydrogen atom by reaction with CO 2 and alkaline phenates in an organic medium, characterized in that the reaction is conducted in the presence of simple or substituted alkaline phenates in at least an aprotic medium which is at least a partial solvent for the phenate, and selected from the class consisting of cyclic ethers, aliphatic, cycloaliphatic and heterocyclic tertiary amines, and cyclic sulphones, and at temperatures between about 40° and 60° C. The alkaline phenate is selected from the class consisting of the Li, Na, K salts of the phenols of the general formula: ##STR1## WHEREIN R is hydrogen or an alkyl or an alkoxy group, linear or branched, having up to 20 carbon atoms, or a phenyl group, n varies from 1 to 5, and M is the alkali metal. The starting organic substrate or reactant is selected from the class consisting of ketones, esters, nitroparaffins and nitriles. The alkaline phenate may be prepared "in situ" from the corresponding phenol and alkaline hydroxide with azeotropic elimination by means of solvent of the water thus formed.

Inventors

• 👤 Giorgio Bottaccio
• 👤 Gian Paolo Chiusoli
• 👤 Enzo Alneri
• 👤 Marcello Marchi
• 👤 Giulio Lana

Bibliographic Details