A series of 10-aryl-2,7-dimethyl-4,5-dioxo-3,6,9- trioxa-3,4,5,6,9,10-hexaanthracenes were prepared by the reaction of aromatic aldehydes with triacetic acid lactone in ethylene glycol catalysed by KF-alumina.
X-ray crystallography for 3h: Empirical formula C19H13NO7, FW=367.30, T=297(2)K, monoclinic, space group P2(1)/ c, a=10.669(1)Å, b=11.544(1)Å, c=14.045(2)Å, β=105.98(1)°, V=1663.0(3)Å3, Z=4, Dc=1.467 Mg/m3, λ(MoKα)= 0.71073Å, μ= 0.114 mm−1, F(000)=760. 1.99°<θ<24.99°, R=0.0380, wR=0.0944. S=1.018, Largest diff Peak and hole: 0.188 and −0.168e. Å−3. Crystallographic data for the structure reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication No. CCDC-226174.
11.
Moreno-ManasM., RibasJ., and VirgiliA., Synthesis.1985, 699.
