作者:Wolfgang Oppolzer、Tarun Sarkar、Kumar K. Mahalanabis
DOI:10.1002/hlca.19760590614
日期:——
Acid catalysed dehydration of the diols 5, derived from the cyclohexenone 3 affords mixtures of 8 and 11. The product ratio 8/11, although strongly dependent on both the reaction conditions and the substituent R, is independent of the diol configuration; this indicates a cationic intermediate 6. Conditions were found, which allow the sequence A B C D (Scheme 2) to be applied to the syntheses of the
衍生自环己烯酮3的二醇5的酸催化脱水得到8和11的混合物。产物比率8/11,尽管在很大程度上取决于反应条件和取代基R,但与二醇构型无关;它与二醇的构型无关。这表明阳离子中间体6。条件被发现,其允许序列ABCD(方案2)将被施加到该烯酮的合成8,21和25中公平从相应的环己烯酮至良好的产率3,18和22。