Photolysis of some 2-butenyl/butynylbischromones: Effect of solvent polarity

Original Article

JOURNAL 148

Organic Communications

VOLUME & ISSUE

Year: 2009 Issue: 1 January-March

PAGES

p.7 - 19

STATISTICS

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AUTHORS

Rupesh Kumar and Mohamad Yusuf

GRAPHICAL ABSTRACT

ABSTRACT

Photochemistry of some 2-butenyl/butynyl-bischromones has been investigated in benzene and isopropanol-THF (1:1). The photoreactions are initiated through the intramolecular H-abstraction that leads to the formation of tetracyclic derivatives and vinyl bischromones. Photolytic conversion of the bischromones is found to be dependent upon the nature of the intermediate spacer and H-donating capability of the solvent.

KEYWORDS

1
4-biradicals
bischromones
chromophores
photolytic conversion
intermediate spacer