作者:Nawaf Al-Maharik、Nigel P Botting
DOI:10.1016/s0040-4020(03)00579-9
日期:2003.6
lanthanide catalysed para-Claisen–Cope rearrangement has been used as the key step in a short synthesis of the prenylated isoflavone, lupiwighteone. The Mitsunobu reaction was employed for the 5-O-prenylation of the acid/base sensitive acetylated isoflavone to afford the allyl aryl ether precursor, which was then rearranged under mild conditions in good yield. Rearrangement of the isoflavone gave the 8-prenylisoflavone
镧系元素催化的对-Claisen-Cope重排已被用作异戊二烯酮异黄酮卢维特酮的短合成中的关键步骤。将Mitsunobu反应用于酸/碱敏感的乙酰化异黄酮的5- O-异戊烯基化,以得到烯丙基芳基醚前体,然后将其在温和条件下以高产率重排。异黄酮的重排使8-异戊烯黄酮为单一产物,收率良好。