Rh<sub>2</sub>(II)-Catalyzed Selective C(sp<sup>3</sup>)–H Bond Electrophilic Amination of Aryl Azide-Tethered 1,3-Dicarbonyl Compounds
作者:Ashok Donthoju、Mandalaparthi Phanindrudu、Sushma Ellandula、Malavath Ratan Lal、Jagadeesh Babu Nanubolu、Rambabu Chegondi
DOI:10.1021/acs.orglett.3c03067
日期:2023.10.20
Herein, we report the accomplishment of Rh2(II)-catalyzed intramolecular amination of aryl azide-tethered 1,3-dicarbonyls to access privileged heterocyclic scaffolds with exclusive diastereoselectivity under simple reaction conditions. This method also allows an unconventional direct α-amination at electron-deficient C(sp3)–H bonds of aryl azide-tethered 1,3-diketones to afford fused 2-azatricyclo[4
在此,我们报道了Rh 2 (II)催化芳基叠氮化物束缚的1,3-二羰基的分子内胺化,以在简单的反应条件下获得具有独特非对映选择性的特殊杂环支架。该方法还允许在芳基叠氮化物束缚的 1,3-二酮的缺电子 C(sp 3 )-H 键上进行非常规的直接 α-胺化,得到稠合的 2-氮杂三环[4.4.0.0 2,8 ]癸酮和 2, 2-二取代二氢吲哚,存在于几种生物活性生物碱中。动力学同位素实验表明,烯醇π键在瞬态亲电子铑氮烯中间体上的亲核加成能够形成C-N键。