organic photocatalyst, and we describe a robust method for the directC(sp3)–H carbamoylation of saturated aza-heterocycles under mild conditions by using a naphthalimide (NI)-based organic photocatalyst. This protocol provides a concise and practical approach for the rapid installation of a valuable amide bond onto pharmaceutically useful saturated aza-heterocycles to access a wide range of cyclic α-amino
Direct α-Alkenylation of Cyclic Amines with Maleimides through Fe(III)-Catalyzed C(sp<sup>3</sup>)–H/C(sp<sup>2</sup>)–H Cross Dehydrogenative Coupling
作者:Fang Wang、Qianting Zhou、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.joc.1c01198
日期:2021.9.3
a novel and efficient α-C(sp3)–H alkenylation of cyclic amines with maleimides. Mechanistically, this C(sp3)–H/C(sp2)–H cross dehydrogenative coupling (CDC) reaction involves a cascade procedure including oxidative α-amino radical formation from the cyclic amine substrate and nucleophilicaddition of the in situ formed α-amino radical onto the electron-deficient carbon–carbon double bond of maleimide
FeCl<sub>3</sub>
-Catalyzed Cascade Reactions of Cyclic Amines with 2-Oxo-2-arylacetic Acids toward Furan-2(5<i>H</i>
)-one Fused <i>N,O</i>
-Bicyclic Compounds
作者:Xiaonan Shi、Yan He、Xinying Zhang、Xuesen Fan
DOI:10.1002/adsc.201701053
日期:2018.1.17
and efficient synthesis of furan‐2(5H)‐one fused N,O‐containing bicyclic compounds via the cascade reactions of N‐aryl substituted cyclic amines with 2‐oxo‐2‐arylacetic acids is presented. Mechanistically, the formation of the title compounds is initiated by the in situ formation of a cyclic enamine intermediate via FeCl3/di‐tert‐butyl peroxide (TBP)/oxygen (O2)‐promoted C(sp3)−H dehydrogenation of saturated
BippyPhos: A Single Ligand With Unprecedented Scope in the Buchwald–Hartwig Amination of (Hetero)aryl Chlorides
作者:Sarah M. Crawford、Christopher B. Lavery、Mark Stradiotto
DOI:10.1002/chem.201302453
日期:2013.12.2
demonstrating the largest scope in the NH‐containing coupling partner reported for a single Pd/ligand catalyst system. We also established BippyPhos/[Pd(cinnamyl)Cl]2 as exhibiting the broadest demonstrated substrate scope for metal‐catalyzed cross‐coupling of (hetero)aryl chlorides with NH indoles. Furthermore, the remarkable ability of BippyPhos/[Pd(cinnamyl)Cl]2 to catalyze both the selective monoarylation