SCHEDULED MAINTENANCE
Treatment of 2-phenacylisoquinolinium bromide with ammonium acetate in acetic acid gave 5,10-dihydro-2-phenylimidazo[1,2-b]isoquinoline (4) by cyclisation at the 3-position of the isoquinoline ring. The mechanism of this reaction is discussed. On similar treatment 1-phenacylquinolinium bromide gave 4,5-dihydro-2-phenyl-imidazo[1,2-a]quinoline (8).
R. F. Cookson, D. P. Nowotnik, R. T. Parfitt, J. E. Airey and A. S. Kende, J. Chem. Soc., Perkin Trans. 1, 1976, 201 DOI: 10.1039/P19760000201
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