245670-75-1Relevant academic research and scientific papers
A ring transformation of 6,7-dihydro-4H-pyrido[1,2-a]pyrimidin-4-ones
Hermecz, Istvan,Horvath, Agnes
, p. 10221 - 10230 (1999)
Under the conditions of Vilsmeier-Haack formylation, nitrogen bridgehead ring systems containing a 6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one moiety (which can isomerize into a tautomeric 6,7-dihydro from under the reaction conditions) or a 6,7-di
