4959-99-3Relevant articles and documents
Synthesis of [5,6]-fused pyridocoumarins through aza-Claisen rearrangement of 6-propargylaminocoumarins
Symeonidis, Theodoros S.,Kallitsakis, Michael G.,Litinas, Konstantinos E.
, p. 5452 - 5455 (2011)
[5,6]-Fused pyridocoumarins are prepared through aza-Claisen rearrangement and subsequent in situ cyclization of 6-propargylaminocoumarins under microwave irradiation in the presence of boron trifluoride diethyl etherate in N,N-dimethylformamide. During this process demethoxycarbonylation is observed in the corresponding 4-carbomethoxycoumarin derivatives.
Synthesis of quinolines and fused pyridocoumarins from N-propargylanilines or propargylaminocoumarins by catalysis with gold nanoparticles supported on TiO2
Symeonidis, Theodoros S.,Lykakis, Ioannis N.,Litinas, Konstantinos E.
, p. 4612 - 4616 (2013/06/26)
[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.
Electrocyclization of cis-dienals in organic synthesis: A new and versatile synthetic method for the preparation of aryl- and heteroaryl-fused coumarins
Hon, Yung-Son,Tseng, Tze-Wei,Cheng, Chia-Yi
supporting information; experimental part, p. 5618 - 5620 (2010/01/31)
Benzo-, furo-, thieno-, and pyrido[f]coumarins were prepared by generating the 2H-pyran-2-one moieties from the oxidation of the corresponding 2H-pyran rings, which were formed in situ from the electrocyclization of cis-dienals.
