Heterocyclic Compounds
Full Access
ChemInform Abstract: Synthesis, Electronic Structure, and Absorption Spectra of 9- Hydroxypyrido(1,2-a)pyrimidinium Derivatives.
First published: April 6, 1993
Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract
Cyclization of the 2-aminopyridinium perchlorate (I) with the β- dicarbonyl compounds (II) or the malonaldehyde acetal (V) give the pyridopyrimidinium perchlorates (III) and (VI). (IIIa) is heated with an acidic ion exchanger, producing the betain (IV).
