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Title: Photochemical synthesis of 9-methoxy-5-thiophenyl-12H-benzo[a] xanthene-12-one
Authors: Miya, Mohd Basheer
Rao, Y Jayaprakash
Krupadanam, G L David
Keywords: 4H-Chromen-4-one;12H-benzo[a] xanthene-12-one;OMEGA long wave length model 300 W;Photochemical synthesis
Issue Date: Jun-2012
Publisher: NISCAIR-CSIR, India
Abstract: Photochemical oxidation of 7-methoxy-3-phenyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-4H-chromen-4-one 4 in methanol containing iodine in the presence of air afforded 9-methoxy-5-thiophenyl-12H-benzo[a] xanthene 5. The structure of the photo products was confirmed by IR, UV-Vis, 1H NMR and mass spectra. A suitable mechanism has been proposed.
Page(s): 895-898
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.51B(06) [June 2012]

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