Development of a Suzuki Cross-Coupling Reaction between 2-Azidoarylboronic Pinacolate Esters and Vinyl Triflates To Enable the Synthesis of [2,3]-Fused Indole Heterocycles
作者:Navendu Jana、Quyen Nguyen、Tom G. Driver
DOI:10.1021/jo500252e
日期:2014.3.21
The scope and limitations of a Suzukireaction between 2-azidoarylboronic acid pinacolate esters and vinyl triflates are reported. This cross-couplingreaction enables the regioselective synthesis of indoles after a subsequent RhII2-catalyzed sp2-C–H bond amination reaction.
Efficient Synthesis of 3<i>H</i>-Indoles Enabled by the Lead-Mediated α-Arylation of β-Ketoesters or γ-Lactams Using Aryl Azides
作者:Fei Zhou、Tom G. Driver
DOI:10.1021/ol5010615
日期:2014.6.6
of a lead-mediated α-arylation reaction between aryl azides and β-ketoesters or γ-lactams that facilitates the formation of 3H-indoles is disclosed. Twenty-five examples are included which demonstrate the generality of this reaction to access aryl azides bearing tetrasubstituted o-alkyl substituents. When paired with a Staudinger reduction, this reaction streamlines the synthesis of functionalized 3H-indoles
Rh<sub>2</sub>(II)-Catalyzed Ester Migration to Afford 3<i>H</i>-Indoles from Trisubstituted Styryl Azides
作者:Chen Kong、Tom G. Driver
DOI:10.1021/ol503541z
日期:2015.2.20
Rh-2(II)-Complexes trigger the formation of 3H-indoles from ortho-alkenyl substituted aryl azides. This reaction occurs through a 4 pi-electron-5-atom electrocyclization of the rhodium N-aryl nitrene followed by a [1,2]-migration to afford only 3H-indoles. The selectivity of the migration is dependent on the identity of the beta-styryl substituent.