Heterocycles p. 897 - 910 (1997)
Update date:2022-08-03
Topics:
Moutou, Jean-Luc
Schmitt, Martine
Collot, Valérie
Bourguignon, Jean-Jacques
A series of 2-substituted 3-acylimidazo[1,2-a]pyridines were synthesized in good to moderate yields from secondary amidino ketones and bromine in acetic acid. Cyclocondensation of the α-bromo-β-amidino ketones (6) led to the corresponding trans-dihydroimidazoles (13), which may yield spontaneously the stable 3-acylimidazo[1,2-a]pyridines (2) after dehydrogenation.
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