作者:Jie Liu、Kang-Fei Hu、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.7b02731
日期:2017.10.20
In this work, an organopromoted metal-free pharmaceutical-oriented selectivity-switchable benzylic oxidation was developed, affording mono-, di-, and trioxygenation products, respectively, using oxygen as the oxidant under mild conditions. This process facilitates dioxygenation of 2,6-benzylic positions of heterocycles, which could be inhibited by heterocycle chelation to the metal cocatalysts. Enantiopure
在这项工作中,开发了一种有机促进的,无金属的,面向药物的选择性可转换的苄基氧化,在温和的条件下使用氧气作为氧化剂分别提供了单,双和三加氧产物。该过程促进了杂环的2,6-苄基位置的双加氧,这可以通过与金属助催化剂的杂环螯合来抑制。也可以制备对映纯的手性酮。过渡金属和毒素的不参与避免了金属或有害残留物,从而确保了Lenperone的克级合成。