Process for the manufacture of levulinic acid and esters

Details Process for the manufacture of levulinic acid and esters Process for the manufacture of levulinic acid and esters

C - Chemistry, Metallurgy

07

C

202/101, 260/488

C07C 69/716 (2006.01) C07C 51/09 (2006.01)

Patent

CA 1140579

ABSTRACT OF THE DISCLOSURE An improved process for the manufacture of levulinic acid which comprises esterification of fur- furyl alcohol in the presence of a different alcohol selected from unsubstituted primary and secondary carbon-chain or carbon-ring alcohols containing 1 to 10 carbon atoms in the presence of a small amount of acid as a catalyst, purification of the resulting levulinate ester by vacuum distillation of a mixture of the levu- linate ester and a high boiling solvent and hydrolysis of the purified levulinate ester in the presence of water and a small amount of strong acid catalyst to yeild levulinic acid-watcr mixture. The Improvement resides in the purification being carried out prior to hydrolysis and in using a high boiling solvent in the purification step to prevent the formation of a solid resin.

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