CuH-Catalyzed Synthesis of 3-Hydroxyindolines and 2-Aryl-3H-indol-3-ones from o-Alkynylnitroarenes, Using Nitro as Both the Nitrogen and Oxygen Source
摘要:
CuH-catalyzed diasterospecific synthesis of 3-hydroxyindolines and 2-aryl-3H-indol-3-ones have been developed from o-alkynylnitroarenes in the presence of hydrosilane as the reductant. The protocol employs nitro as both nitrogen and oxygen sources for the intramolecular simultaneous construction of C-N and C-O bonds.
Gold(<scp>i</scp>)-catalyzed synthesis of 2-substituted indoles from 2-alkynylnitroarenes with diboron as reductant
作者:Wenqiang Fu、Kai Yang、Jinglong Chen、Qiuling Song
DOI:10.1039/c7ob01918a
日期:——
An efficient method for the synthesis of 2-substitutedindoles via a diboron/base promoted tandem reductive cyclization of o-alkynylnitroarene under Au catalysis conditions has been disclosed. This reaction is efficient and convenient, affording 2-substitutedindoles with broad functional groups tolerance and excellent yields.
Synthesis of
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<i>N</i>
</scp>
‐Hydroxyindole Derivatives via Pd‐Catalyzed Electrophilic Cyclization
作者:Soo Min Oh、Seunghoon Shin
DOI:10.1002/bkcs.12285
日期:2021.6
A synthetic protocol for the synthesis of C2-substituted N-hydroxyindoles has been developed which consists of Sonogashira coupling, partial reduction of the nitro group, and Larock cyclization. This protocol features superior generality and efficiency over conventional alternatives.