Process for producing desoxy-.alpha.-acids

Details Process for producing desoxy-.alpha.-acids Process for producing desoxy-.alpha.-acids

1978-08-16

1980-02-26

Reamer, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560231, C07C 4500

Patent

active

041906047

ABSTRACT:
A process for the production of desoxy-.alpha.-acids from the corresponding .beta.-acids is disclosed which process comprises converting a .beta.-acid into a mixture of its monoacylation products and subsequently reacting the monoacylation product at 160.degree. to 250.degree. C., in the presence of a lower alkanoic acid with an anhydride of such an alkanoic acid, with the splitting-off of isoprene, to obtain the triacyl derivative of the corresponding desoxy-.alpha.-acid, and hydrolysing said triacyl derivative to obtain the desoxy-.alpha.-acid. Desoxy-.alpha.-acids are valuable intermediates for producing bitter principles, which are used in the foodstuffs and drinks industry.

REFERENCES:
patent: 4053517 (1977-10-01), Reininger et al.
patent: 4101585 (1978-07-01), Burckhardt et al.
Verzele, Eur. Brew Conv. Proc. Congr., 1971, 14, pp. 95-106.
Stevens, Chem. Revs., 67, pp. 19-71 (1967).

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