Tetrahedron Letters p. 5833 - 5834 (1990)
Update date:2022-08-04
Topics:
Hlasta, Dennis J.
Imidazo [1,5-alpyridine (1) displays dual reactivity through two condition-dependent reaction pathways. Regiospecific acylation occurs with benzoyl chloride at the 1-position under Friedl-Crafts conditions to afford 3 or at the 3-position via a postulated, stabilized ylid 5 under thermal or triethylamine-mediated acylation conditions to give 2.
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