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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 8, Number 3
BKCSDE 8(3)
March 20, 1987 

 
Title
Lewis Acid Catalysis of Coumarin and 5,7-Dimethoxycoumarin Photodimerization
Author
Sang Chul Shim*, Eun Il Kim, Ki Taek Lee
Keywords
Abstract
The effect of Lewis acids on spectroscopic properties and photodimerization of coumarin and 5,7-dimethoxycoumarin was investigated. Quantum yields of coumarin photodimerization increase in the presence of BF3·OEt2 but those of 5,7-dimethoxycoumarin decrease. The spectroscopic properties of the coumarin-BF3·OEt2 and 5,7-dimethoxycoumarin-BF3·OEt2 complexes were studied by UV, IR, 1H NMR and fluorescence spectroscopy.
Page
140 - 144
Full Text
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