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18 天
Algar-Flynn-Oyamada氧化反应
在碱和双氧水存在下,2’-羟基查尔酮(2’-hydroxychalcones)氧化环化转化为 2-芳基-3-羟基-4H-1苯并吡喃-4-酮(黄酮醇,flavonols)的反应。此反应也发生副反应生成橙酮(aurone)类化合物。 反应机理 先进行亲核环氧化,接着进行分子内的β-亲核进攻关环,接着迅速 ...
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