作者:Qian Wang、Xia-li Liao、Cheng Xiang、Jian Yang
DOI:10.3184/174751917x14873588907765
日期:2017.3
A practical and economical five-step synthesis of the flavone scutellarein has been achieved in 60% overall yield using the available and cheap 2,6-dimethoxy-1,4-benzoquinone as starting material. The reaction sequence involved reduction to the corresponding quinol, Friedel-Crafts acetylation, Claisen-Schmidt condensation with p-methoxybenzaldehyde, cyclisation and demethylation. The procedure is operationally
使用可用且廉价的 2,6-二甲氧基-1,4-苯醌作为起始原料,以 60% 的总收率实现了实用且经济的黄酮黄酮五步合成。反应顺序包括还原为相应的醌醇、Friedel-Crafts 乙酰化、Claisen-Schmidt 与对甲氧基苯甲醛缩合、环化和去甲基化。该程序操作简单,适合放大合成。