Boron chelates in the synthesis of α,β-unsaturated ketones of the coumarin series |
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| Authors: | A V Manaev T A Chibisova V F Traven |
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| Institution: | (1) D. I. Mendeleev Russian University for Chemical Technology, 3 Miusskaya pl., 125047 Moscow, Russian Federation |
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| Abstract: | Condensation of aromatic aldehydes with 3(8)-acetyl-4(7)-difluoroboryloxycoumarin intramolecular complexes gave boron complexes
of α,β-unsaturated ketones, whose hydrolysis afforded the corresponding hydroxy cinnamoylcoumarins. The boron complexes and
their hydrolysis products intensely absorb and fluoresce in the visible region of the spectrum.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2144–2150, December, 2006. |
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| Keywords: | coumarins α β -enones boron complexes aldol condensation electronic absorption spectra fluorescence |
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