在本文中,我们报告了通过自由基途径对异喹啉-1(2H)-进行钯(0)催化的C4位点选择性CH二氟烷基化反应。本反应可通过容易获得的异喹啉-1(2H)-直接交叉偶联反应来制备2,2-二氟-2-(1-氧代-1,2-二氢异喹啉-4-基)乙酸酯/乙酰胺含2溴2,2,2-二氟乙酸酯或2溴2,2,2-二氟乙酰胺的化合物。因此,该方法提供了将二氟乙酸酯或二氟乙酰胺部分安装到生物活性分子中的有效且方便的方法。生物测定结果表明,在C4位置引入这些二氟基团有助于改善其抗病毒活性和化合物5 ab 被发现与商业宁南霉素具有相似的抗病毒活性。
Cascade Palladium-Catalyzed Alkenyl Aminocarbonylation/ Intramolecular Aryl Amidation: An Annulative Synthesis of 2-Quinolones
作者:Andrew C. Tadd、Ai Matsuno、Mark R. Fielding、Michael C. Willis
DOI:10.1021/ol802624e
日期:2009.2.5
Palladium-catalyzed intermolecular aminocarbonylation/intramolecular amidation cascade sequences can be used to convert a range of 2-(2-haloalkenyl)aryl halide substrates efficiently and selectively to the corresponding 2-quinolones. Delaying the introduction of the CO atmosphere allows an amination/carbonylation sequence and the preparation of an isoquinolone.
Efficient and rapid synthesis of N-substituted isoquinolin-1-ones under mild conditions: Facile access to doryanine derivatives
作者:Akshay. D. Takwale、Yeong Uk Jeon、Dong Ho Lee、Hyun Jin Kim、Jong Yeon Hwang
DOI:10.1016/j.tetlet.2019.03.073
日期:2019.5
We describe the simple and efficientsynthesis of N-substituted isoquinolin-1-one derivatives. Initiating with the coupling of benzoic acids containing vinyl ethers with different amines, followed by rapid intramolecular cyclization under acidic conditions at room temperature, N-substituted isoquinolin-1-ones were furnished in high yields. The utility of this simple and mild cyclization method was
Multifunctionalization of C(sp
<sup>3</sup>
)−H Bond of Tetrahydroisoquinolines through C−H Activation Relay (CHAR) Using α‐Cyanotetrahydroisoquinolines as Starting Materials
Using α-cyanotetrahydroisoquinolines as the startingmaterials, a TBN/O2 initiated C(sp3)−Hbondmultifunctionalization was developed, realizing the construction of the isoquinolin-1-one skeleton. This work revealed that the functionalization of the relatively inert C−Hbond could be induced by a radical C−Hactivationrelay (CHAR) process.
Palladium-catalyzed denitrogenation/vinylation of benzotriazinones with vinylene carbonate
作者:Jiang Nan、Qiong Huang、Xinran Men、Shuai Yang、Jing Wang、Yangmin Ma
DOI:10.1039/d4cc00059e
日期:——
Herein, a novel Pd-catalyzed denitrogenation/vinylation of benzotriazinones using vinylenecarbonate as the vinylation reagent is reported. This transformation demonstrates an unprecedented skeletal editing approach, effectively converting NN to CC fragments in situ and synthesizing a collection of isoquinolinones with broad-spectrum functional group tolerance. Moreover, the quite concise reaction
在此,报道了一种使用碳酸亚乙烯酯作为乙烯基化试剂的新型钯催化苯并三嗪酮脱氮/乙烯基化反应。这种转变展示了前所未有的骨骼编辑方法,有效地将 N N 至 C C原位片段并合成一系列具有广谱官能团耐受性的异喹啉酮。此外,相当简洁的反应体系和生物活性分子的后期修饰全面强调了该方案的实际潜力。