| 摘要 |
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 DEG to 250 DEG 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.
|
