Cyclic quaternary ammonium salts. Part V. Pyrido[1,2-a]pyrazin-5-ium salts
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- p. 2391-2395
- https://doi.org/10.1039/j39670002391
Abstract
The synthesis of pyrido[1,2-a]pyrazin-5-ium salts and of 1-hydroxy- and 1,3-dihydroxy-pyrido[1,2-a]pyrazin-5-ium salts is described; the spectroscopic properties of these potentially tautomeric hydroxy-salts indicate that the carbonyl forms are preferred. Bromination of pyrido[1,2-a]pyrazin-5-ium bromide 2-oxide gave a monobromo-derivative which was subsequently converted into 1-bromopyrido[1,2-a]pyrazin-5-ium bromide.Keywords
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