Free accessResearch articleFirst published online 2004-4
Chromone studies. Part 15. Formation and condensation of Baylis–Hillman adducts in DABCO-catalysed reactions of chromone-3-carbaldehydes with acrylonitrile
1,4-Diazabicyclo[2.2.2]octane(DABCO)-catalysed reactions of selected chromone-3-carbaldehydes with acrylonitrile (or methyl vinyl ketone) have led to the formation of Baylis–Hillman adducts and, in some cases, novel polycyclic condensation derivatives; electron-impact and electrospray MS fragmentation patterns have been examined for selected products.
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Prepared using 3-hydroxyquinuclidine, as described for compound 5a.
