Synthesis of quinolines and fused pyridocoumarins from N-propargylanilines or propargylaminocoumarins by catalysis with gold nanoparticles supported on TiO2

[5,6]-Fused pyridocoumarins are prepared under mild conditions in excellent yields through the activation of the triple bond of 6-propargylaminocoumarins by gold nanoparticles supported on TiO2. The analogous reaction of N-propargylanilines with Au/TiO2 or Au/Al2O3 resulted in the formation of quino...

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Bibliographic Details
Published in:Tetrahedron 2013-06, Vol.69 (23), p.4612-4616
Main Authors: Symeonidis, Theodoros S., Lykakis, Ioannis N., Litinas, Konstantinos E.
Format: Article
Language:English
Subjects:
6-Propargylaminocoumarins
Activation
Aluminum oxide
Bonding
Fused dipyridocoumarins
Gold
Gold nanoparticles
Heterogeneous catalysis
N-Propargylanilines
Nanoparticles
Organic compounds
Pyrido[5,6]coumarins
Quinolines
Tetrahedrons
Titanium dioxide
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Summary:[5,6]-Fused pyridocoumarins are prepared under mild conditions in excellent yields through the activation of the triple bond of 6-propargylaminocoumarins by gold nanoparticles supported on TiO2. The analogous reaction of N-propargylanilines with Au/TiO2 or Au/Al2O3 resulted in the formation of quinolines. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2013.04.026