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Title: Photochemical synthesis of 9-methoxy-5-thiophenyl-12<i style="">H</i>-benzo[<i style="">a</i>] xanthene-12-one
Authors: Miya, Mohd Basheer
Rao, Y Jayaprakash
Krupadanam, G L David
Keywords: 4<i>H</i>-Chromen-4-one
12<i style="">H</i>-benzo[<i style="">a</i>] 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-[(<i>E</i>)-2-(thiophen-2-yl)ethenyl]-4<i>H</i>-chromen-4-one <b style="">4</b> in methanol containing iodine in the presence of air afforded 9-methoxy-5-thiophenyl-12<i style="">H</i>-benzo[<i style="">a</i>] xanthene <b style="">5</b>. The structure of the photo products was confirmed by IR, UV-Vis, <sup>1</sup>H NMR and mass spectra. A suitable mechanism has been proposed.
Description: 895-898
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.51B(06) [June 2012]

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