| 摘要 |
1379859 Reduction of zearalenone COMMERCIAL SOLVENTS CORP 2 July 1973 [26 Sept 1972] 31490/73 Heading C2C Zearalenone of formula is converted to a mixture of a major amout of the high boiling-point diastereoisomer and a minor amount of the low boiling-point diastereoisomer of zearalanol of formula by catalytically reducing zearalenone with hydrogen in the presence of a solvent and from 0À001 to 5% (vol.), based on the solvent of a weak acid and a platinum catalyst, said acid having an ionization constant for one hydrogen of from 1 Î 10<SP>-4</SP> to 5 Î 10<SP>-1</SP> in aqueous solution and said acid not being itself reduced to a weaker acid under the reaction conditions. Suitable weak acids are, for example, tartaric acid, phosphoric acid, oxalic acid and citric acid. |
