Irradiation of flavonols (1) in methanol gave 3-arylphthalides (3) which were formed via the diketones (4). Metal ions (Cu2+, Ni2+, Fe3+, Co2+ and Be2+) inhibited this rearrangement.
在
甲醇中辐照
黄酮醇(1)可得到 3-芳邻
苯酞(3),后者通过二酮(4)形成。
金属离子(Cu2+、Ni2+、Fe3+、Co2+ 和 Be2+)抑制了这种重排。