When the monoanion of vitamin K hydroquinone is treated with
18
O
2
in THF, the product, vitamin K oxide, carries a
full atom of
18
O at the epoxide oxygen and partial
incorporation (34%) of a second atom of
18
O at the carbonyl
oxygen, which is most reasonably ascribed to the dioxetane mechanism.
当
维生素 K
对苯二酚的单阴离子在
四氢呋喃中用 18 O 2 处理时,产物
维生素 K 氧化物在环氧氧上带有一个完整的 18 O 原子,在羰基氧上部分加入(34%)第二个 18 O 原子,这最合理地归因于二氧杂
环丁烷机制。