A. M. Rahman, Y. Jahng
Sep 1, 2007
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Influential Citations
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Journal
Heterocycles
Abstract
Reactions of 4-aminoacridine-3-carbaldehyde with benzo[b]cyclo-alkanones and 3,4-dihydro-1 (2H) -anthracenone afforded a series of corresponding 3,2'-polymethylene-2-phenylbenzo[b ]-1,10 -phenanthrolines and 3,3'-dimethylene-2-(naphth-2'-yl)benzo[b ]-1,10 -phenanthroline, respectively, as new N,N,C-terdentates. Dehydrogenation of dimethylene-bridged systems afforded the corresponding fully aromatized systems. Flexibility of annulated bridges is highly dependent on the length of the carbon chain, where tetramethylene-bridge is rigid enough to differentiate eight bridge protons in 1 H NMR time scale at room temperature.