Tetrahedron Letters p. 69 - 72 (1988)
Update date:2022-08-03
Topics:
Cummings, Richard T.
DiZio, James P.
Krafft, Grant A.
The synthesis and photochemistry of functionalized 3-aroyl-2-(2-furyl)-chromones 1 which are photoactivable fluorophores are described.Irradiation converts the non-fluorescent furyl chromones to highly fluorescent 1-arylfuro <3,4b>chromones 3.Functionality has been incorporated to permit covalent attachment, impart aqueous solubility and to maximize the fluorescence of the ultimate 1-arylfuro<3,4-b>chromone fluorophore.An efficient synthetic pathway to the furyl chromones via an intramolecular Dieckman cyclization also is described.
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