87779-02-0Relevant articles and documents
An unexpected result in the condensation of 2-amino-6-bromo- pyridine with ethyl 4-chloroacetoacetate: Four dihalo-substituted pyrido[1,2-a]pyrimidin-4-ones as reaction products
Ferrarini, Pier Luigi,Mori, Claudio,Mori, Filippo,Saccomanni, Giuseppe,Barontini, Silvia,Macchia, Marco,Barili, Pier Luigi,Hamdan, Mahmoud
, p. 1065 - 1072 (1999)
We report here the condensation of 2-amino-6-bromopyridine with ethyl 4-chloroacetoacetate in polyphosphoric acid. In this reaction, a mixture of the four possible dihalo-4H-pyrido[1,2- a]pyrimidin-4-ones 1-4 was obtained.