An efficient protocol for the cobalt‐catalyzed acyloxylation of arenes and alkenes with the assistance of an 8‐aminoquinolyl auxiliary group is reported. In this transformation, benzoic acids, alkenyl acids, and aliphatic acids could be readily involved to afford structurally diverse esters. It is worth noting that the silver sulfate (Ag2SO4) oxidant is renewable and the directing group could be removed
据报道,借助8-氨基喹啉基辅助基团,钴可有效催化芳烃和烯烃的酰氧基化反应。在该转化中,苯甲酸,烯基酸和脂族酸可以容易地参与以提供结构上多样化的酯。值得注意的是,硫酸银(Ag 2 SO 4)氧化剂是可再生的,并且可以除去和回收导向基团。该策略代表了过渡金属催化的烯基羧酰胺C(sp 2)-H键与羧酸的酰氧基化的第一个成功实例。
Cobaltaelectrocatalysis set the stage for sustainable C—H acyloxylations in biomass‐derived γ‐valerolactone as a renewable solvent. The sustainable electrocatalysis regime featured ample scope, along with high levels of chemo‐ and position‐selectivity.
A palladium-catalyzed aryl C-H bonds activation/acetoxylation reaction utilizing a bidentate system has been explored. This transformation has been applied to a wide array of pyridine and 8-aminoquinoline derivatives and it exhibits excellent functional group tolerance.
Isoindolone Synthesis via Palladium-Catalysed Intramolecular Amination of Benzylic C–H bonds
作者:Ming Zhang
DOI:10.3184/174751913x13801883437178
日期:2013.10
A new method for the construction of isoindolones is presented in this paper. Four 7-methyl-2-(8-quinolinyl)-2,3-dihydro-1H-isoindol-1-ones were synthesised from 2,6-dimethyl-N-(8-quinolinyl)benzamides via intramolecular direct amination of benzylic C-H bonds. This approach provides a convenient method affording structurally new isoindolones for medicinal chemistry research.