202326-94-1Relevant articles and documents
Unusual ambident behavior and novel ring transformation of oxazolo[3,2-a]pyridinium salts
Babaev, Eugene V.,Efimov, Audrey V.,Maiboroda, Dmitriy A.,Jug, Karl
, p. 193 - 196 (1998)
2-Aryloxazolo[3,2-a]pyridinium perchlorate, 1a, and its 5-methyl homologue, 1b, undergo quite different ring transformations when reacting with piperidine. For 1a the opening of the pyridine fragment occurs with formation of the isomeric aminobutadienes 2