<b>Preparation of Indoles from </b>
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<b>-Alkynyltrifluoroacetanilides Through the Aminopalladation-Reductive Elimination Process</b>
作者:Sandro Cacchi、Giancarlo Fabrizi、Luca Parisi
DOI:10.1055/s-2004-815993
日期:——
The functionalized pyrrole nucleus contained in the indole system has been assembled via the palladium-catalyzed reaction of o-alkynyltrifluoroacetanilides with organic halides/triflates or allyl carbonates. In the presence of carbon monoxide, a three-component reaction can take place and indole derivatives incorporating a molecule of carbon monoxide have been obtained.
N-Heterocyclic-Carbene-Catalyzed Umpolung of Imines
作者:Atanu Patra、Subrata Mukherjee、Tamal Kanti Das、Shailja Jain、Rajesh G. Gonnade、Akkattu T. Biju
DOI:10.1002/anie.201611268
日期:2017.3.1
N‐Heterocycliccarbene (NHC) catalysis has been widely used for the umpolung of aldehydes, and recently for the umpolung of Michael acceptors. Described herein is the umpolung of aldimines catalyzed by NHCs, and the reaction likely proceeds via aza‐Breslow intermediates. The NHC‐catalyzed intramolecular cyclization of aldimines bearing a Michael acceptor resulted in the formation of biologically important