A direct annulation reaction of N‐(2‐formylaryl)indoles has been developed, which can provide a new entry to biologically and medicinally important indole‐indolone scaffolds via a silver‐catalyzed direct oxidative coupling between aldehydeCH and sp2CH bonds for the first time. Remarkably, this strategy displayed excellent functional group compatibilities, thereby suggesting its wide potential for
Rapid synthesis of the indole-indolone scaffold via [3+2] annulation of arynes by methyl indole-2-carboxylates
作者:Donald C. Rogness、Richard C. Larock
DOI:10.1016/j.tetlet.2009.04.047
日期:2009.7
The reaction of methyl indole-2-carboxylates and arynes affords a very efficient, high yielding synthesis of a novel indole-indolone ring system, which tolerates considerable functionality, is broad in scope, and proceeds under mild reaction conditions.
[EN] NOVEL INDICATOR PLATFORM<br/>[FR] NOUVELLE PLATEFORME INDICATRICE
申请人:BIOSYNTH AG
公开号:WO2010128120A1
公开(公告)日:2010-11-11
A novel indicator platform comprises a plurality of 1 H-lndol-3-yl indicator compounds that are capable of converting to a signalophore compound in response to an external stimulus. In one class of indicator compounds, the resulting signalophores are 2-benzylideneindoline compounds that are formed by an intermolecular Aldol-type process; in a further class of indicator compounds, the resulting signalophores are 10H-indolo[1,2-a]indole compounds that are formed by an intramolecular Aldol-type process. The indicators can be used in a wide array of applications relating, for example, to biological systems or optical data storage.
Synthesis of 10<i>H</i>-indolo[1,2-<i>a</i>]indol-10-ones <i>via</i> palladium-catalyzed C–H bond activation and difluorocarbene transfer
作者:Chengxian Hu、Dan Mou、Xi Zhang、Ying Fu、Congde Huo、Zhengyin Du
DOI:10.1039/d2ob01493a
日期:——
A Pd-catalyzed annulation between 1-(2-iodophenyl)-1H-indoles and sodium difluorochloroacetate has been developed to synthesize 10H-indolo[1,2-a]indol-10-one derivatives via C–Hbondactivation and difluorocarbene transfer. Our route enables facile access to the targeted products with various substituents in moderate to high yields. This method features high reactivity, good functional group tolerance