P S Pahwa
Articles written in Journal of Chemical Sciences
Volume 88 Issue 3 June 1979 pp 191-196 Organic
It has been shown that the KNH2/NH3 cyclisation of ortho/meta halogenated Schiff bases, or the corresponding dihydro compounds, succeeds when 1,2-naphthynes and 2,3-pyridynes are involved as intermediates. Using this procedure 3-aza-benzo[j]phenanthridine, 9-azaphenanthridine and 2,11-diazachrysene have been synthesized.
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