Silver/Rhodium Relay Catalysis Enables C−H Functionalization of
<i>In Situ</i>
Generated Isoquinolines with Sulfoxonium Ylides: Construction of Hexahydrodibenzo[
<i>a</i>
,
<i>g</i>
]quinolizine Scaffolds
作者:Quanzhe Li、Ruixing Liu、Yin Wei、Min Shi
DOI:10.1002/adsc.202100141
日期:2021.5.18
developed. The acylmethylated isoquinoline derivatives could be afforded with broad substrate scope in 23–88% yields, which could be further transformed to the core skeleton of hexahydrodibenzo[a,g]quinolizine as drug-candidates. Moreover, this reaction was achieved in a gram-scale. A reasonable reaction mechanism has been proposed based on a series of control and KIE experiments.
利用银/铑中继催化策略,已经开发了分子内亲电环化和CHH活化,然后进行级联氢化和还原胺化的方法。酰基甲基化的异喹啉衍生物可以以23-88%的收率在较宽的底物范围内提供,并可以进一步转化为六氢二苯并[ a,g ]喹啉嗪的核心骨架,作为候选药物。此外,该反应以克为单位进行。基于一系列的控制和KIE实验,提出了合理的反应机理。