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Photocyclisations of some 3‐alkoxy‐2‐thienylchromones
Author(s) -
Yusuf Mohamad,
Kumar Rupesh,
Gupta S. C.
Publication year - 2008
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570450403
Subject(s) - chemistry , allylic rearrangement , yield (engineering) , intramolecular force , alkoxy group , abstraction , medicinal chemistry , organic chemistry , stereochemistry , catalysis , philosophy , materials science , alkyl , epistemology , metallurgy
Photoreorganisations of some 3‐allyloxy‐2‐thienylchromones have been described. The photoreactions are initiated through the intramolecular H‐abstraction to provide angular tetracyclic compounds. These chromones yield good chemical efficiency due to the involvement of highly stabilized allylic 1,4‐biradicals.