A Journey through
<i>Hemetsberger–Knittel</i>
,
<i>Leimgruber–Batcho</i>
and
<i>Bartoli</i>
Reactions: Access to Several Hydroxy 5‐ and 6‐Azaindoles
作者:Sylvie Radix、François Hallé、Zahia Mahiout、Amélie Teissonnière、Grégoire Bouchez、Ludovic Auberger、Roland Barret、Thierry Lomberget
DOI:10.1002/hlca.202100211
日期:2022.3
obtained. The crucial introduction of the oxygen atom was carried out from halogen derivatives, using nucleophilic substitution reactions under basic conditions with or without a copper catalyst. Some preliminary oxidation reactions have shown that it was yet not possible to synthesize the azaquinone indole structure from monohydroxy azaindole, using molecular oxygen in the presence of salcomine as a catalyst
描述了各种 5-和 6-氮杂吲哚、在临床开发中经常作为分子组成部分的杂环结构及其单羟基类似物的制备。研究了依赖于从头吡咯环形成的不同策略,感谢Hemetsberger-Knittel、Bartoli和Leimgruber-Batcho方法,得到4-和7-单羟基5-和6-氮杂吲哚。氧原子的关键引入是从卤素衍生物中进行的,在有或没有铜催化剂的碱性条件下使用亲核取代反应。一些初步的氧化反应表明,在 Salcomine 存在下使用分子氧作为催化剂,从单羟基氮杂吲哚合成氮杂醌吲哚结构是不可能的。